9,10-Dihydro-9,10-ethanoanthracene-11,12-trans-dicarboxylic acid diethyl ester |
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| Name | 9,10-Dihydro-9,10-ethanoanthracene-11,12-trans-dicarboxylic acid diethyl ester | ||
| Synonyms | |||
| Name in Chemical Abstracts | 9,10-Ethanoanthracene-11,12-dicarboxylic acid, diethyl ester, trans- | ||
| CAS No | 93368-53-7 | ||
| EINECS No | |||
| Molecular formula | C22H22O4 | ||
| Molecular mass | 350.42 | ||
| SMILES code | c1cccc2[C@@H]3[C@H](C(=O)OCC)[C@@H](C(=O)OCC)[C@H](c12)c4ccccc43 | ||
1H NMR
| 1H-NMR: 9,10-Dihydro-9,10-ethanoanthracene-11,12-trans-dicarboxylic acid diethyl ester | |||
| 250 MHz, CDCl3 | |||
| delta [ppm] | mult. | atoms | assignment |
| 1.23 | t (3J = 7.2 Hz) | 6 H | CH3 ethyl |
| 3.45 | m | 2 H | 11-H, 12-H (-CH-COO-) |
| 4.08 | m | 4 H | CH2 ethyl |
| 4.75 | m | 2 H | 9-H, 10-H |
13C-NMR |
| 13C-NMR: 9,10-Dihydro-9,10-ethanoanthracene-11,12-trans-dicarboxylic acid diethyl ester | |||
| 62.5 MHz, CDCl3 | |||
| delta [ppm] | assignment | ||
| 14.2 | CH3 (ethyl ester) | ||
| 46.7 | C9, C10 (CH) | ||
| 47.7 | C11, C12 (CH-COO) | ||
| 60.9 | CH2 (ethyl ester) | ||
| 123.8 | CH arom. | ||
| 124.5 | CH arom. | ||
| 126.2 | CH arom. | ||
| 126.3 | CH arom. | ||
| 140.3 | C quart. arom. | ||
| 142.0 | C quart. arom. | ||
| 172.3 | C(=O)O- | ||
| 76.5-77.5 | CDCl3 | ||
IR
| IR: 9,10-Dihydro-9,10-ethanoanthracene-11,12-trans-dicarboxylic acid diethyl ester | |||
| [KBr, T%, cm-1] | |||
| [cm-1] | assignment | ||
| 3074, 3026 | arom. C-H valence | ||
| 2981 | aliph. C-H valence | ||
| 2935, 2897 | aliph. C-H valence | ||
| 1739 | C=O valence, ester | ||
| 1467 | arom. C=C valence | ||
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; Side reactions |
Synthesis of 9,10-dihydro-9,10-ethanoanthracene-11,12-trans-dicarboxylic acid diethyl ester |
| Reaction type: | cycloaddition, Diels-Alder reaction |
| Substance classes: | alkene, aromatics, carboxylic acid ester, diene, dienophile, acid catalyst |
| Techniques: | working with moisture exclusion, heating under reflux, stirring with magnetic stir bar, filtering, evaporating with rotary evaporator, recrystallizing, use of an ice cooling bath, heating with oil bath |
Equipment |
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three-necked flask 1000 mL |  |
adapter with ground-glass joint and hose coupling | |
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protective gas piping |  |
reflux condenser | |
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drying tube |  |
bubble counter | |
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powder funnel |  |
heatable magnetic stirrer with magnetic stir bar | |
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rotary evaporator |  |
ice bath | |
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exsiccator with drying agent |  |
oil bath |
Operating scheme |
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MULTAN, PAKISTAN
Mutlan is an important city of Pakistan which is also known as the city of Saints. The history of Multan begins with the Alexander and later on Kushans, Arabs, Huns, Ghaznavi, Afghans, Mongols, Sikhs, Mughals and British ruled over the city. It is the city of Sufis and Saints who preached the Islam in this region. In the South Asia Multan is the oldest city.
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Multan Things to Do
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Baha-ud-din Zakariya Mazar
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Multan is known as City of Saints, and this is evident by the number of Masuleums, Mazars, Dargas, or tombs situated in this city. Some of them are listed below.1 Hazrat Baha-ud-Din Zakaria2 Shah Rukn-i-Alam3 Shah Shams Sabzwari4 Shah Gardez5 Musa Pak Shaheed6 Hazrat Hafiz Muhammad… more
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King mosque Eid Gah
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Shrines of the sufi hermits
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Visiting Historical Places
As I describe before that Multan is the city of Saints so there r so many Tombs to Visit and explore the history.
Multan Hotels
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