When the heart is afire,some sparks will fly out of the mouth.心里有什么,嘴里总要泄露出来。The clinic was set afire.诊所被人放火了.Sydney is afire with Olympic enthusiasm.悉尼全城燃烧着奥林匹克的热情。When the heart is afire, some sparks will fly out of th...
本文根据实验事实,阐述了烷基的负诱导效应.In this paper, negative induction effect of alkyl is discussed base on the experiment facts.季铵盐中烷基的转移具有较好的选择性,其优先顺序为:苄基>伯烷基>仲烷基.Excellent selectivity in alkyl transfer was noted in the sequence of Ph...