作者:Peter T. Meinke、Grant A. Krafft
DOI:10.1016/s0040-4039(00)95607-7
日期:——
regiochecnical preferences of substituted selenoaldehydes in cycloaddition reactions with electronically biased dienes have been examined. Selenoaldehydes substituted with electron withdrawing groups exhibit “ortho-para” orientation, while selenoaldehydes substituted with donating or conjugating groups exhibit “meta” orientation. Nitrile oxide dipolar cycloadditions of selenoformaldehyde and selenobenzaldehyde
已经研究了在具有电子偏压的二烯的环加成反应中取代的硒醛的区域化学偏好。被吸电子基团取代的硒醛表现出“邻位”取向,而被供电子或共轭基团取代的硒醛表现出“元”取向。还描述了硒甲醛和硒代苯甲醛的一氧化二氮偶极环加成。