Tetrahedron Letters p. 4553 - 4556 (1984)
Update date:2022-08-04
Topics:
Nakayama, Juzo
Tanuma, Mitsuru
Honda, Yoshiko
Hoshino, Masamatsu
A series of arylmethanesulfonyl chlorides were treated with triethylamine in THF to give stilbenes in excellent yields.Workup of the mixtures below 10 deg C permits isolation of stilbene episulfones which on warming decompose to yield the corresponding stilbenes stereospecifically.Application of the reaction to 9-fluorenylsulfonyl chloride affords bifluorenylidene, while trans-styrylmethanesulfonyl chloride gives 4,5-dihydro-4,5-diphenylthiepin 1,1-dioxide and 1,6-diphenylhexatriene.
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