An efficient way for the N-formylation of amines by inorganic-ligand supported iron catalysis

organic chemistry, SYNTHESIS Comments Off

Jan 162020

Graphical abstract: An efficient way for the N-formylation of amines by inorganic-ligand supported iron catalysis

An efficient way for the N-formylation of amines by inorganic-ligand supported iron catalysis

Green Chem., 2020, Advance Article

DOI: 10.1039/C9GC03564H, Paper

Zhikang Wu, Yongyan Zhai, Wenshu Zhao, Zheyu Wei, Han Yu, Sheng Han, Yongge Wei
A green and highly efficient N-formylation of amines using formic acid as the acylating agent by iron catalysis with excellent selectivity and yields.
To cite this article before page numbers are assigned, use the DOI form of citation above.
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An efficient way for the N-formylation of amines by inorganic-ligand supported iron catalysis

Zhikang Wu,‡^a Yongyan Zhai,‡^a Wenshu Zhao,‡^b Zheyu Wei,^a Han Yu,*^ac Sheng Han

*^a and Yongge Wei

*^cd

Author affiliations

*Corresponding authors

^aSchool of Chemical and Environmental Engineering Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, P.R. China
E-mail: hanyu0220@tsinghua.edu.cn, hansheng654321@sina.com

^bLonghua Hospital Shanghai University of Traditional Chinese Medicine, China

^cKey Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, P.R. China
E-mail: yonggewei@tsinghua.edu.cn

^dState Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, P.R. China
E-mail: ygwei@pku.edu.cn

Abstract

The first example of an inorganic-ligand supported iron(III) catalysed coupling of formic acid and amines to form formamides is reported. The pure inorganic catalyst (NH₄)₃[FeMo₆O₁₈(OH)₆] (1), which consists of a central Fe^III single-atomic core supported within a cycle-shaped inorganic ligand consisting of six Mo^VIO₆ octahedra, shows excellent activity and selectivity, and avoids the use of complicated/commercially unavailable organic ligands. Various primary amines and secondary amines have been successfully transformed into the corresponding formamides under mild conditions, and the formylation of primary diamines has also been achieved for the first time. The Fe catalyst 1 can be reused several times without appreciable loss of activity.

Image result for Zhikang Wu School of Chemical and Environmental Engineering Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, P.R. China

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http://www.rsc.org/suppdata/c9/gc/c9gc03564h/c9gc03564h1.pdf

AGGARWWAL EXPORTS : R-Glycidyl Butyrate first in India

MANUFACTURING, SYNTHESIS, Uncategorized Comments Off

Nov 222019

Aggarwwal Exports becomes first company in India to manufacture R-Glycidyl Butyrate (CAS No. : 60456-26-0) in India. The company holds a GMP and US FDA registration for the product with an audit ready plant.

Aggarwwal Exports – Specialty chemical division’s core strength is Chiral Molecules. R-Glycidyl Butyrate is a Linezolid intermediate that is either imported from China or South Korea, until now. As China’s reliablility due to Trade War and pollution problems have arisen, more companies are looking to develop Indian Manufacturers to ensure longevity and robustness of Raw Material Supply.

The company has developed a process from the base level of Racemic Epichlorohydrin and is utilizing precious metal to create chirally pure S-Epichlorohydrin and R-Epichlorohydrin, which is further processd to make R-Glycidyl Butyrate and R-Glycidol.

Benefits of purchasing from Aggarwwal Exports-

1) 99% GC purity and 99% Chiral Purity

2) Importing from China and Japan is a tedious process as import duty needs to be made, lead time is around 2 months as R-GB is under Hazardous cargo which is expensive to ship.

3) Pricing is slightly lower than imports but quality is improved.

4) Lead time is 10 days from order confirmation.

5) Most importantly, Make in India.

Pranjal Varshney, V.P. Operations

www.agexpharma.com

Aggarwwal Exports, B-8 Roshan Bagh, Rampur 244901 (UP) India

Cell: +91-9837035981 | Email: Pranjal@agexpharma.com

Catalyst- and additive-free Baeyer–Villiger-type oxidation of α-iodocyclopentenones to α-pyrones: using air as the oxidant

green chemistry, spectroscopy, SYNTHESIS, Uncategorized Comments Off

Oct 152019

Graphical abstract: Catalyst- and additive-free Baeyer–Villiger-type oxidation of α-iodocyclopentenones to α-pyrones: using air as the oxidant

An efficient synthetic approach for the synthesis of α-pyrones via Baeyer–Villiger-type oxidation of α-iodocyclopentenones through a catalyst- and additive-free system using air as an environmentally benign oxidant is described. The reaction exhibits excellent functional group compatibility and provides a simple and efficient protocol for the construction of highly functionalized α-pyrones under mild reaction conditions.

Catalyst- and additive-free Baeyer–Villiger-type oxidation of α-iodocyclopentenones to α-pyrones: using air as the oxidant†

Yuanyuan Zhou,^a Xianxiao Chen,^a Xiangxiang Ling^a and Weidong Rao

*^a

Author affiliations

*Corresponding authors

^aJiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
E-mail:weidong@njfu.edu.cn

6-Cyclohexyl-4-phenyl-2H-pyran-2-one (2e)[S3]

Product 2e was obtained as a pale-yellow solid in 68% yield (52 mg) following the general procedure, mp 96-97 °C;

1H NMR (600 MHz, CDCl3) δ 7.58-7.56 (m, 2H), 7.48-7.46 (m, 3H), 6.34 (d, J = 1.3 Hz, 1H), 6.26 (d, J = 0.8 Hz, 1H), 2.48 (tt, J = 11.8, 3.3 Hz, 1H), 2.04-2.01 (m, 2H), 1.87-1.84 (m, 2H), 1.47 (qd, J = 12.5, 3.0 Hz, 2H), 1.39-1.32 (m, 2H), 1.28-1.23 (m, 2H);

13C NMR (150 MHz, CDCl3) δ 169.8, 163.6, 155.6, 136.2, 130.5, 129.1, 126.7, 108.4, 100.9, 42.5, 30.6, 25.9, 25.8

http://www.rsc.org/suppdata/c9/gc/c9gc02725d/c9gc02725d1.pdf

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Catalyst- and Additive-Free Baeyer−Villiger-type Oxidation of α-Iodocyclopentenones to α-Pyrones: Using Air as the Oxidant

ANTHONY CRASTO, organic chemistry, spectroscopy, SYNTHESIS Comments Off

Sep 112019

Catalyst- and Additive-Free Baeyer−Villiger-type Oxidation of α-Iodocyclopentenones to α-Pyrones: Using Air as the Oxidant

Yuanyuan Zhou, Xianxiao Chen, Xiangxiang Ling and Weidong Rao

Abstract

An efficient synthetic approach for the synthesis of α-pyrones via Baeyer−Villiger-type oxidation of α-iodocyclopentenones through a catalyst- and additive-free system using air as an environmentally benign oxidant is described. The reaction exhibits excellent functional group compatibility and provides a simple and efficient protocol for the construction of highly functionalized α-pyrones under mild reaction conditions.

Ethyl 4-(4-cyclopropyl-2-oxo-2H-pyran-6-yl)butanoate (2aa) Product 2aa was obtained as yellow oil in 50% yield (38 mg) following the general procedure; 1H NMR (600 MHz, CDCl3) δ 5.84 (s, 1H), 5.61 (s, 1H), 4.13-4.09 (m, 2H), 2.48 (t, J = 7.3 Hz, 2H), 2.33 (td, J = 7.3, 2.3 Hz, 2H), 1.97-1.94 (m, 2H), 1.66-1.63 (m, 1H), 1.26-1.22 (m, 3H), 1.07-1.05 (m, 2H), 0.80-0.79 (m, 2H); 13C NMR (150 MHz, CDCl3) δ 172.8, 163.9, 163.0, 162.8, 106.7, 102.1, 60.5, 33.2, 33.0, 22.1, 15.4, 14.2, 10.0; HRMS (ESI) calcd. for C14H18O4Na [M+Na]+ : 273.1097, found: 273.1101

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https://pubs.rsc.org/en/Content/ArticleLanding/2019/GC/C9GC02725D?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2FGC+%28RSC+-+Green+Chem.+latest+articles%29#!divAbstract

http://www.rsc.org/suppdata/c9/gc/c9gc02725d/c9gc02725d1.pdf

Tetrahydrothiopyran-4-one as Five-Carbon Source for Scalable Synthesis of (±)-Tapentadol

PROCESS, SYNTHESIS Comments Off

Jul 122019

Abstract Image

Tetrahydrothiopyran-4-one as Five-Carbon Source for Scalable Synthesis of (±)-Tapentadol

Ramagonolla Kranthikumar

Prathama S. Mainkar
Genji Sukumar
Rambabu Chegondi
Srivari Chandrasekhar*

Cite This:Org. Process Res. Dev.2019XXXXXXXXXX-XXX

Publication Date:June 26, 2019

https://doi.org/10.1021/acs.oprd.9b00121

The improved process for the synthesis of (±)-tapentadol, the FDA-approved analgesic drug, is achieved from tetrahydrothiopyran-4-one as the five-carbon source.

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Structural evolution of carbon in an Fe@C catalyst during the Fischer–Tropsch synthesis reaction

ANTHONY CRASTO, organic chemistry, SYNTHESIS Comments Off

Feb 012019

Structural evolution of carbon in an Fe@C catalyst during the Fischer–Tropsch synthesis reaction

Shuai Lyu,^a^b Chengchao Liu,^b Guanghui Wang,*^a Yuhua Zhang,^b Jinlin Li^b and Li Wang*^b

Author affiliations

*Corresponding authors

^aHubei Key Laboratory of Coal Conversion and New Carbon Material, School of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, China
E-mail: wghwang@263.net

^bKey Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, China
E-mail: li.wang@mail.scuec.edu.cn

Abstract

A pseudo-in situ research method was applied to provide insight into the structural evolution of carbon in an Fe@C catalyst at different stages of the Fischer–Tropsch reaction. Five typical stages of the catalyst were selected for in-depth structural investigation; these were: the fresh catalyst, reduced catalyst, and catalyst in the stable conversion period, in an increased-conversion period and at the inactivation stage. The results indicated that the integral structure of Fe@C constantly changed in the Fischer–Tropsch reaction. Iron carbide transformed from the Fe phase that was easily oxidized under high temperature Fischer–Tropsch conditions, and the carbon framework was completely destroyed in the reaction process, leading to a drastic decrease in the specific surface area of the material. This destruction could have two opposing effects: on the one hand, the loss of carbon could re-expose the active sites that have been covered by carbon at a reaction temperature of 320 °C and favor the reaction; on the other hand, the deposition of carbon could block the active sites and lead to inactivation when the reaction temperature is over 340 °C.

https://pubs.rsc.org/en/Content/ArticleLanding/2019/CY/C8CY02420K?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2Fcy+%28RSC+-+Catalysis+Science+%26+Technology+latest+articles%29#!divAbstract

////////Fischer–Tropsch

Nickel-catalyzed regioselective C–H oxygenation: new routes for versatile C–O bond formation

spectroscopy, SYNTHESIS Comments Off

Jan 302019

Graphical abstract: Nickel-catalyzed regioselective CâH oxygenation: new routes for versatile CâO bond formation

Nickel-catalyzed regioselective C–H oxygenation: new routes for versatile C–O bond formation

Org. Chem. Front., 2019, Advance Article
DOI: 10.1039/C8QO01274A, Research Article

Ze-lin Li, Kang-kang Sun, Chun Cai
Nickel-catalyzed regioselective C–H oxygenation reactions of chelating arenes using iodobenzene diacetate, alcohols, and benzoic acids respectively as attacking reagents have been developed for the first time.
To cite this article before page numbers are assigned, use the DOI form of citation above.

Abstract

Nickel-catalyzed regioselective C–H oxygenation reactions of chelating arenes using iodobenzene diacetate, alcohols, and benzoic acids respectively as attacking reagents have been developed for the first time. Simplicity of operation, broad range of functional group tolerance, use of cheap transition metal nickel, and avoiding extraneous directing groups are the key features, thus providing an important complement to C–H oxygenation reactions and expanding the field of nickel-catalyzed C–H functionalizations. Explorations of mechanistic details are also described.

Nickel-catalyzed regioselective C–H oxygenation: new routes for versatile C–O bond formation

Ze-lin Li,^a Kang-kang Sun^a and Chun Cai*^a

Author affiliations

*Corresponding authors

^aCollege of Chemical Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei, Nanjing, China
E-mail:c.cai@njust.edu.cn

https://pubs.rsc.org/en/Content/ArticleLanding/2019/QO/C8QO01274A#!divAbstract

2-(pyridin-2-yl)phenyl acetate (2a)

Formula: C13H11NO2 Mass: 213

To a mixture of 2-phenylpyridine (77.5 mg, 0.5 mmol) 1a, Ni(acac)2 (25.7 mg, 0.1 mmol, 20 mol %), ligand MePh2P (20.0 mg, 0.1 mmol, 20 mol %), and PhI(OAc)2 (483.2 mg, 0.75 mmol, 1.5 equiv) in a reaction tube was added solvent (CH3CN=2.0 mL). The reaction mixture was stirred at 115 °C for 24 h in air. Following the general procedure, 2a was purified by column chromatography on silica gel (petroleum ether: ethyl acetate = 5:1) as a white solid (80.9 mg, 76%).

1H NMR (500 MHz, Chloroform-d) δ 8.8 – 8.7 (m, 1H), 7.8 – 7.7 (m, 2H), 7.6 (dd, J = 7.9, 1.1 Hz, 1H), 7.5 (td, J = 7.7, 1.7 Hz, 1H), 7.4 (td, J = 7.5, 1.2 Hz, 1H), 7.3 – 7.3 (m, 1H), 7.2 (dd, J = 8.0, 1.2 Hz, 1H), 2.2 (s, 3H).

13C NMR (126 MHz, Chloroform-d) δ 168.4, 154.9, 148.6, 147.1, 135.3, 132.2, 129.8, 128.7, 125.4, 122.6, 122.3, 121.2, 20.0. GC-MS (EI) m/z: 213

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“ALL FOR DRUGS” CATERS TO EDUCATION GLOBALLY, No commercial exploits are done or advertisements added by me. This is a compilation for educational purposes only. P.S. : The views expressed are my personal and in no-way suggest the views of the professional body or the company that I represent

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A solvent-free catalytic protocol for the Achmatowicz rearrangement

green chemistry, spectroscopy, SYNTHESIS Comments Off

Jan 292019

Graphical abstract: A solvent-free catalytic protocol for the Achmatowicz rearrangement

Abstract

Reported here is the development of an environmentally friendly catalytic (KBr/oxone) and solvent-free protocol for the Achmatowicz rearrangement (AchR). Different from all previous methods is that the use of chromatographic alumina (Al₂O₃) allows AchR to proceed smoothly in the absence of any organic solvent and therefore considerably facilitates the subsequent workup and purification with minimal environmental impacts. Importantly, this protocol allows for scaling up (from milligram to gram), recycling of the Al₂O₃, and integrating with other reactions in a one-pot sequential manner.

A solvent-free catalytic protocol for the

Achmatowicz rearrangement

Guodong Zhao^a and Rongbiao Tong*^a^b

Author affiliations

*Corresponding authors

^aDepartment of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, China
E-mail: rtong@ust.hk
Fax: +(852)23581594
Tel: +(852) 23587357

^bHKUST Shenzhen Research Institute, Shenzhen 518057, China

https://pubs.rsc.org/en/Content/ArticleLanding/2019/GC/C8GC03030H?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2FGC+%28RSC+-+Green+Chem.+latest+articles%29#!divAbstract

1n: colorless oil, 0.33 g, 73% yield for 2 steps.

1H-NMR (400 MHz, DMSO) δ: 7.59–7.58 (m, 1H), 7.45 (s, 2H), 6.40 (dd, J = 3.2, 1.8 Hz, 1H), 6.29 (d, J = 3.2 Hz, 1H), 5.49 (s, 1H), 4.74–4.60 (m, 1H), 4.18–4.07 (m, 2H), 2.09–2.04 (m, 2H).

13C-NMR (100 MHz, DMSO) δ: 157.6, 142.4, 110.7, 106.1, 66.5, 62.8, 35.2. IR (KBr) 3282.9, 2928.7, 1627.4, 1562.5, 1353.8, 1174.6, 1074.0, 999.7, 918.4, 742.8 cm-1 ;

HRMS (CI+ ) (m/z) calcd. for C7H11NO5S [M]+ 221.0352; found 221.0354.

2n (EtOAc/hexane = 3:1):colorless oil (dr 7:3), 46 mg, 97%.

1H-NMR (400 MHz, DMSO) δ: 7.48–7.47 (m, 2H), 7.34–7.02 (m, 2H), 6.12–6.03 (m, 1H), 5.61–5.48 (m, 1H), 4.60 (dd, J = 8.3, 4.1 Hz, 0.7H), 4.28 (ddd, J = 8.8, 4.0, 1.3 Hz, 0.3H), 4.20–4.11 (m, 2H), 2.27–2.20 (m, 1H), 1.97–1.86 (m, 1H).

13C-NMR (100 MHz, DMSO) δ: 196.7, 196.5, 151.9, 148.3, 127.7, 126.0, 90.9, 87.2, 74.6, 70.1, 65.8, 65.8, 30.3, 29.6. IR (KBr) 3370.4, 2987.0, 1689.5, 1364.3, 1268.0, 1178.4, 1023.3, 928.3, 755.1 cm-1 ;

HRMS (CI+ ) (m/z) calcd. for C7H11NO6S [M]+ 237.0302; found 237.0315.

////////////////Achmatowicz rearrangement

Eco-friendly decarboxylative cyclization in water: practical access to the anti-malarial 4-quinolones

spectroscopy, SYNTHESIS Comments Off

Jan 292019

Graphical abstract: Eco-friendly decarboxylative cyclization in water: practical access to the anti-malarial 4-quinolones

Abstract

An environmentally benign decarboxylative cyclization in water has been developed to synthesize 4-quinolones from readily available isatoic anhydrides and 1,3-dicarbonyl compounds. Isatins are also compatible for the reaction to generate 4-quinolones in the presence of TBHP in DMSO. This protocol provides excellent yields under mild conditions for a broad scope of 4-quinolones, and has good functional group tolerance. Only un-harmful carbon dioxide and water are released in this procedure. Moreover, the newly synthesized products have also been selected for anti-malarial examination against the chloroquine drug-sensitive Plasmodium falciparum 3D7 strain. 3u is found to display excellent anti-malarial activity with an IC₅₀ value of 33 nM.

Eco-friendly decarboxylative cyclization in water: practical access to the anti-malarial 4-quinolones

Yue Ma,^a Yongping Zhu,^a Dong Zhang,^a Yuqing Meng,^a Tian Tang,^a Kun Wang,^a Ji Ma,^a Jigang Wang^a and Peng Sun*^a

Author affiliations

*Corresponding authors

^aArtermisinin Research Center and Institute of Chinese Meteria Medica, Academy of Chinese Medical Sciences, Beijing, P. R. China
E-mail:psun@icmm.ac.cn

https://pubs.rsc.org/en/Content/ArticleLanding/2019/GC/C8GC03570A?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2FGC+%28RSC+-+Green+Chem.+latest+articles%29#!divAbstract

ethyl 2-(4-(benzyloxy)phenyl)-4-oxo-1,4-dihydroquinoline-3-carboxylate (3u) White solid, m.p. 288-289 oC;

1H NMR (600 MHz, DMSO-d6) δ 12.14 (s, 1H), 8.13 (d, J = 8.0 Hz, 1H), 7.72 (ddd, J = 8.4, 7.1, 1.5 Hz, 1H), 7.64 (d, J = 8.3 Hz, 1H), 7.52 (td, J = 8.5, 1.7 Hz, 1H), 7.43 – 7.35 (m, 4H), 7.29 – 7.21 (m, 4H), 7.10 (td, J = 7.5, 0.5 Hz, 1H), 5.17 (s, 2H), 3.91 (q, J = 7.1 Hz, 2H), 2.00 (s, 1H), 0.83 (t, J = 7.1 Hz, 3H) ppm;

13C NMR (150 MHz, DMSO-d6) δ 174.1, 166.2, 156.2, 148.0, 139.8, 137.2, 132.8, 132.0, 130.5, 129.4, 128.7, 128.2, 127.6, 125.5, 125.2, 124.3, 123.6, 120.9, 118.9, 116.4, 115.8, 113.5, 70.2, 60.2, 14.0 ppm;

HRMS (ESI) calcd for [C25H21NO4+H]+ 400.1471, found 400.1463.

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Photo-organocatalytic synthesis of acetals from aldehydes

organic chemistry, spectroscopy, SYNTHESIS Comments Off

Jan 292019

Graphical abstract: Photo-organocatalytic synthesis of acetals from aldehydes

Abstract

A mild and green photo-organocatalytic protocol for the highly efficient acetalization of aldehydes has been developed. Utilizing thioxanthenone as the photocatalyst and inexpensive household lamps as the light source, a variety of aromatic and aliphatic aldehydes have been converted into acyclic and cyclic acetals in high yields. The reaction mechanism was extensively studied

Photo-organocatalytic synthesis of acetals from aldehydes

Nikolaos F. Nikitas,^a Ierasia Triandafillidi^a and Christoforos G. Kokotos*^a

Author affiliations

*Corresponding authors

^aLaboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece
E-mail:ckokotos@chem.uoa.gr

https://pubs.rsc.org/en/Content/ArticleLanding/2019/GC/C8GC03605E?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2FGC+%28RSC+-+Green+Chem.+latest+articles%29#!divAbstract

(3,3-Dimethoxypropyl)benzene (2a)6

Colorless oil; 95% yield; 1H NMR (200 MHz, CDCl3) δ: 7.33-7.18 (5H, m, ArH), 4.37 (1H, t, J = 5.8 Hz, OCH), 3.33 (6H, s, 2 x OCH3), 2.68 (2H, t, J = 7.6 Hz, CH2), 1.98- 1.87 (2H, m, CH2); 13C NMR (50 MHz, CDCl3) δ: 141.8, 128.4, 125.9, 103.7, 52.8, 34.0, 30.8; MS (ESI) m/z 181 [M+H]+ .

6. Q. Zhou, T. Jia. X.-X. Li, L. Zhou, C.-J. Li, Y. S. Feng, Synth. Commun., 2018, 48, 1068.

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An efficient way for the N-formylation of amines by inorganic-ligand supported iron catalysis

An efficient way for the N-formylation of amines by inorganic-ligand supported iron catalysis

An efficient way for the N-formylation of amines by inorganic-ligand supported iron catalysis

Abstract

AGGARWWAL EXPORTS : R-Glycidyl Butyrate first in India

Catalyst- and additive-free Baeyer–Villiger-type oxidation of α-iodocyclopentenones to α-pyrones: using air as the oxidant

Catalyst- and additive-free Baeyer–Villiger-type oxidation of α-iodocyclopentenones to α-pyrones: using air as the oxidant†

Catalyst- and Additive-Free Baeyer−Villiger-type Oxidation of α-Iodocyclopentenones to α-Pyrones: Using Air as the Oxidant

Catalyst- and Additive-Free Baeyer−Villiger-type Oxidation of α-Iodocyclopentenones to α-Pyrones: Using Air as the Oxidant

Abstract

Tetrahydrothiopyran-4-one as Five-Carbon Source for Scalable Synthesis of (±)-Tapentadol

Tetrahydrothiopyran-4-one as Five-Carbon Source for Scalable Synthesis of (±)-Tapentadol

Ramagonolla Kranthikumar

Structural evolution of carbon in an Fe@C catalyst during the Fischer–Tropsch synthesis reaction

Structural evolution of carbon in an Fe@C catalyst during the Fischer–Tropsch synthesis reaction

Abstract

Nickel-catalyzed regioselective C–H oxygenation: new routes for versatile C–O bond formation

Nickel-catalyzed regioselective C–H oxygenation: new routes for versatile C–O bond formation

Abstract

Nickel-catalyzed regioselective C–H oxygenation: new routes for versatile C–O bond formation

“ALL FOR DRUGS” CATERS TO EDUCATION GLOBALLY, No commercial exploits are done or advertisements added by me. This is a compilation for educational purposes only. P.S. : The views expressed are my personal and in no-way suggest the views of the professional body or the company that I represent

READ

Anthony Melvin Crasto Dr. | ResearchGate

amcrasto@gmail.com

A solvent-free catalytic protocol for the Achmatowicz rearrangement

Abstract

A solvent-free catalytic protocol for the

Achmatowicz rearrangement

Eco-friendly decarboxylative cyclization in water: practical access to the anti-malarial 4-quinolones

Abstract

Eco-friendly decarboxylative cyclization in water: practical access to the anti-malarial 4-quinolones

Photo-organocatalytic synthesis of acetals from aldehydes

Abstract

Photo-organocatalytic synthesis of acetals from aldehydes

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