series of arylmethanesulfonyl chlorides were treated with triethylamine in THF to give stilbenes in excellent yields. Workup of the mixtures below 10 °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
在THF中用
三乙胺处理了一系列芳基甲
磺酰氯,以优异的收率得到了斯蒂苯。在低于10°C的温度下对混合物进行后处理可分离出
二苯乙烯lb砜,该砜在升温时会分解,从而立体定向生成相应的斯蒂芬苯砜。将该反应应用于9-
芴基
磺酰氯,得到联
芴基,而反式-
苯乙烯基甲
磺酰氯得到4,5-二氢-4,5-二苯基
噻吩基1,1-二氧化物和1,6-二苯基己
三烯。