Synthesis and characterization of polyimides from 9,10-diphenyl-1,2,3,4,5,6,7,8-octahydro-2,3,6,7-anthracenetetracarboxylic 2,3:6,7-dianhydride
β Scribed by Yong Seok Kim; Jin Chul Jung
- Publisher
- Springer
- Year
- 2002
- Tongue
- English
- Weight
- 93 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0170-0839
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The title compound, C 21 H 20 ClN 3 O 2 , was synthesized by the reaction of 4-chlorobenzaldehyde and 3-(5,5-dimethyl-3-oxocyclohex-1-enylamino)propanoic acid with malononitrile in ethylene glycol under microwave irradiation. The dihydropyridine ring has a boat conformation. The pyrimidine ring adop
The title compound, C~22~H~29~NO~4~S, crystallizes with three independent molecules, __A__, __B__ and __C__, in the asymmetric unit. Each of the three independent molecules adopts a folded conformation, with the phenylsulfonyl group lying over the pyranocyclohexanone ring system, and with the pyrrol