作者:A. Chatterjee、D. Banerjee、B. Banerjee、R. Mallik
DOI:10.1016/s0040-4020(01)92158-1
日期:——
different steric requirements under refluxing benzene afforded a single stereoisomer of the cyclopropane derivatives 4. The same reaction under refluxing ethanol gave the normal products, i.e. the trans-lactones 6. Mechanism and high stereoselectivity observed in the novel cyelopropane formation, and regiospecific cleavage of the cyclopropane carboxylic acids (in4) have also been discussed in detail
在回流的苯下,具有不同空间要求的碳环的环氧化物2(ad)的亲核性开环提供了环丙烷衍生物4的单一立体异构体。在回流的乙醇下进行相同的反应,得到正常产物,即反式内酯6。还详细讨论了在新的环丙烷形成中观察到的机理和高立体选择性,以及环丙烷羧酸的区域特异性裂解(图4)。