It had been discussed about the synthesizing scheme of predecessor about diethyl zinc used in the method of sol-gel, problems existed in it also were pointed out. 试验探讨了溶胶凝胶法中前驱体二乙基锌的合成方案,并指出了其存在的问题所在;
Emphasis is put on the second part. Part two mainly deals with alkylation of imine with diethyl zinc mediated by amino alcohols and allylation of imines. 我们重点做了第二部分的工作,第二部分研究了亚胺的立体选择性烷基化和烯丙基化反应。