Tetrahedron Letters p. 4313 - 4316 (1991)
Update date:2022-07-30
Topics:
Ishii, Akihiko
Horikawa, Yasuaki
Takaki, Ikuo
Shibata, Jun
Nakayama, Juzo
Hoshino, Masamatsu
A series of 2,5-bis(diarylmethylene)-2,5-dihydrothiophenes 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 diaryl ketones or from 2,5-diaroyl five-membered heteroaromatics and 2 equiv of aryllithiums.Key Words: 2,5-dimethylene-2,5-dihydrofuran; 2,5-dimethylene-2,5-dihydrothiophene; 2,5-dimethylene-2,5-dihydroselenophene; N-methyl-2,5-dimethylene-2,5-dihydropyrrole
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Doi:10.1016/0022-328X(91)86280-4
(1991)Doi:10.1039/d0cc02560g
(2020)Doi:10.1021/om200713v
(2011)Doi:10.1021/jo00091a015
(1994)Doi:10.1016/j.tetasy.2011.08.005
(2011)Doi:10.1055/s-1991-26420
(1991)