作者:Krishna Kumar Gnanasekaran、Junghak Yoon、Richard A. Bunce
DOI:10.1016/j.tetlet.2016.06.033
日期:2016.7
substituents on the side chain double bond. The study revealed that nitro substitution gave the best results for addition of carbon and nitrogen nucleophiles. Cyano-substituted systems added carbon nucleophiles, but underwent polymerization or degradation with nitrogen nucleophiles. Ethoxycarbonyl-bearing substrates reacted primarily at the ester carbonyl. The reaction generally proceeded well with methyl
将亲核试剂加到在邻位或对位结合了吸电子基团的苯乙烯的末端双键碳上位置已被研究。已经优化了该转化的条件,并且已经探索了对底物的结构修饰。结构变化包括芳环上活化基的变化和侧链双键上的定位取代基。研究表明,硝基取代对于碳和氮亲核试剂的添加效果最佳。氰基取代的系统添加了碳亲核试剂,但是经过了氮亲核试剂的聚合或降解。带有乙氧基羰基的底物主要在酯羰基上反应。通常,在双键的α碳上有甲基的情况下,反应进行得很好,但在β位置的甲基会使反应变慢。对于22个实例,产率从50%变化到97%。