by subsequent synthetically useful double aldol-type condensations and alkylations, and, in a few cases, by deuterations. Profound metallic cation effects are observed in several of the aldol-type reactions. Finally, the anions of dibenzyl sulfoxide, though stable at low temperatures, readily decompose to trans-stilbene under much milder conditions than previously described.
某些砜和亚砜可以快速,方便地转化为它们的新型1,3-二碱
金属盐,在许多情况下,它们分别仅通过-SO 2-和-SO-基团稳定。通过随后的合成上有用的双羟醛型缩合和烷基化,以及在少数情况下,通过
氘化证明了形成了这种物质。在几种羟醛型反应中观察到了深刻的
金属阳离子效应。最后,
二苄基亚砜的阴离子尽管在低温下稳定,但在比先前描述的温和得多的条件下容易分解成反式-
二苯乙烯。