The one-pot synthesis of several N,N-dialkylamino
esters is reported. Treatment of aldehydes 1 (aliphatic and aromatic)
with (trimethylsilyl)dialkylamines 2, in the presence of
LiClO4 in diethyl ether presumably gives the intermediates 3.
Reaction of these intermediates 3 with functionalized organozinc
reagents, RZnBr, produces a variety of
N,N-dialkylamino esters in a short time (about 1 h)
and in good to moderate yields. The pure products are isolated by
extraction with cold hydrochloric acid.
多种
N,N-二烷基
氨基的一锅法合成
据报道
酯类。醛的处理1(
脂肪族和芳香族)
与(三
甲基甲
硅烷基)二烷基胺2,在存在下
乙醚中的 LiClO4 可能产生
中间体 3。
这些
中间体 3 与官能化
有机锌的反应
试剂,RZnBr,产生多种
短时间内(约1小时)
N,N-二烷基
氨基
酯
且产量良好至中等。纯产物通过分离得到
用冷
盐酸萃取。