β-Dialkylaminocrotonates
self-condense in excess phosphorus oxychloride at room temperature to give
N,N-dialkylanthranilates in high yield. When stoichiometric amounts of
phosphorus oxychloride are used and the reaction is carried out in benzene at
80�, significant amounts of phenolic by-products are also formed, which, in the
case of β- morpholinocrotonates, become the major products. These
compounds have been subjected to a number of transformations which establish
their structure and at the same time provide methods of synthesis for
N,N-dialkylaniline derivatives which are otherwise difficult to obtain.
β-二烷基氨基巴豆酸盐
在室温下,在过量的氧氯化磷中自缩合,得到
高产率的 N,N-二烷基黄原酸酯。当使用一定量的
反应在苯中进行,温度为
时,也会产生大量的酚类副产物。
在 β-吗啉巴豆酸盐的情况下,这些副产物会成为主要产物。这些
这些化合物经过多次转化,在确定其结构的同时
它们的结构,同时也为 N,N-二烷基酰胺的合成提供了方法。
N,N-二烷基苯胺衍生物的合成方法。