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: 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 |
Synthesis of 9,10-dihydro-9,10-ethanoanthracene-11,12-trans-dicarboxylic acid diethyl ester
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| 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 |
 | three-necked flask 1000 mL | |  | adapter with ground-glass joint and hose coupling |
 | protective gas piping | |  | reflux condenser |
 | drying tube | |  | bubble counter |
 | powder funnel | |  | heatable magnetic stirrer with magnetic stir bar |
 | rotary evaporator | |  | ice bath |
 | 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.
.
-
Sheikh
Baha-ud-din Zakariya (1170-1267) was a sufi saint who for several years
travelled the region from Baghdad, Iraq to India preaching Islam, and
made his final abode in Multan. His offsprings and disciples travelled
all over India to preach. His most famous descendant is Shah...
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Situated
on top of a small hillock, behind the old ruins of Multan Fort, the
Mazar and its majestic dome is the first landmark visible when you enter
proper Multan. Shah Rukn-e-Alam (1251-1335) was a Sufi saint in Multan.
He was revered by his followers, and to this date thousands of pilgrims
from all over...
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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...
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Ghanta
Ghar whch is situated in the city center is the city government head
quarter. (not a great picture, taken from a moving car)
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The
Multan Fort on a high mound of earth which separated it from the old
branch of the river Ravi. There are now only remnant of this old fort,
which was considered as one of the best fort (defense wise) built in the
sub-continent. The fort was destroyed when the British took over.
During its haydays the fort walls were was almost 1.6...
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This Masjid is a marvelous piece of architecture of multan.it is a very beautiful masjid and must to visit place of Multran city
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Given
below is list of must to visit shrines in Multan1.Shrine B.B Pak
Damman2.Shrine Hameed-ud-Din Hakim3.Shrine Qutab-al-quteeb'Moj
Daryan'4.Shrine-Syed Pir Sakhi Shah Hasan Prwana5.Shrine-Qazi
Qutab-ud-Din Kashani6.Shrine-Syed Hasan Kanjzee7.Shrine-Hazarat Shah
Dana Shaheed8.Shrine-Abu...
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Hi
Awais,All the destinations in Pakistan, they've their own attraction or
somethijng very special in that area, likewise in Hunza, you can't find
the shrines of the sufi hermits, or in Multan, the mountains like Nanga
parbat or Kalash tribes in Lahore?Multan, Medina-tul-awlia, the city of
saints, famous all over the...
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As I describe before that Multan is the city of Saints so there r so many Tombs to Visit and explore the history.
more
////////
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