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Preparation of 2,5-bis(diarylmethylene)-2,5-dihydrothiophenes and their furan, selenophene, and N-methylpyrrole analogs

✍ Scribed by Akihiko Ishii; Yasuaki Horikawa; Ikuo Takaki; Jun Shibata; Juzo Nakayama; Masamatsu Hoshino

Book ID
104225147
Publisher
Elsevier Science
Year
1991
Tongue
French
Weight
244 KB
Volume
32
Category
Article
ISSN
0040-4039

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✦ Synopsis

A series of 2,5-bis(diarylmethylene)-2.5dihydrothiophenes and their furan, selenophene, and N-methylpyrrole analogs were synthesized in three steps either starting from 2,5-dilithiated five-membered heteroaromatics and 2 equiv of diary1 ketones or from 2,5-diaroyl five-membered hetcroaromatics and 2 equiv of aryllithiums.

Recently 2,5-dimethylene-2,fGlihydrothiophenest have been attracting much attention because of their amphoteric property as electron-donors293 and acceptors 4.5 depending on the nature of substituents on the

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