The reaction of 1,3,2-dioxastannolans with diacyl chlorides: decarbonylation in the reaction with oxalyl chloride
作者:Alwyn G. Davies、Pan Hua-De、Jalal A.-A. Hawari
DOI:10.1016/s0022-328x(00)99202-7
日期:1983.11
2,2-Dibutyl-1,3,2-dioxastannolans react with carbonyl chloride to give the corresponding ethylene carbonates, and with malonyl chloride or succinyl chloride to give the oligomeric malonates or succinates. The reaction of oxalyl chloride, however, depends of the number of methyl substituents carried by the carbon atoms of the ring; with none, ethylene oxalate is essentially the only product, but increasing
2,2-二丁基-1,3,2-二氧杂环戊烷与羰基氯反应生成相应的碳酸亚乙酯,并与丙二酰氯或琥珀酰氯反应生成低聚丙二酸酯或琥珀酸酯。然而,草酰氯的反应取决于环的碳原子所携带的甲基取代基的数目。没有任何一种,草酸乙烯酯基本上是唯一的产物,但是增加的甲基化会诱导一氧化碳的释放和碳酸亚乙酯的形成,直到有四个甲基取代基的只有频哪醇的碳酸盐,而没有草酸酯形成,这就是一个明显的例子。索普-英戈尔德效应的效果。讨论了该脱羰基的机理。