N-lithio-n-(2-lithioethyl)benzamide: direct preparation of a 2-lithioethylamine equivalent
作者:José Barluenga、Francisco Foubelo、Francisco J. Fan˜anás、Miguel Yus
DOI:10.1016/0040-4039(88)85230-4
日期:1988.1
successive reaction of 2-chloroethylbenzamide with n-butyl-lithium and lithium naphthalenide at -78°C leads to N-lithio-N-(2-lithioethyl)benzamide, which reacts with different electrophiles (H2O, D2O, Me2S2, CO2, i-PrCHO, PhCHO, Me2CO, Ph2CO) to afford the expected 2-functionalized benzamides.
2-氯乙基苯甲酰胺与正丁基锂和萘二甲酸锂在-78°C的连续反应生成N-硫代-N-(2-硫代乙基)苯甲酰胺,后者与不同的亲电试剂(H 2 O,D 2 O, Me 2 S 2,CO 2,i-PrCHO,PhCHO,Me 2 CO,Ph 2 CO)得到预期的2-官能化的苯甲酰胺。