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用二苯基烃基型叶立德来研究 Wittig 反应的立体化学将会给人们提供许多有用的信息。我们曾报道,二苯基烯丙基型叶立德与某些醛类在有盐或无盐(锂盐)的条件下所生成的各种1,3-二烯,其 E/Z 值远远大于相应的三苯基叶立德的。根据这一规律,我们曾比较满意
Studying the stereochemistry of the Wittig reaction with diphenylhydrocarbyl-type ylide will provide many useful information. We have reported that the various 1,3-dienes produced by diphenyl allyl type ylide and some aldehydes with or without salt (lithium salt) have much larger E / Z values The corresponding triphenyl ylide. According to this law, we were quite satisfied