N-lithio-N-(2-lithioethyl)- and N-lithio-N-(3-lithiopropyl)-benzamide: direct preparation and synthetic applications of 2-lithioethyl- and 3-lithiopropyl-amine equivalents
作者:José Barluenga、Francisco Foubelo、Francisco J. Fañanás、Miguel Yus
DOI:10.1016/s0040-4020(01)80078-8
日期:1989.1
n-butyl-lithium and lithium naphthalenide at temperatures ranging between −78 and −50°C leads to N-lithio-N-(2-lithioethyl)- and N-lithio-N-(3-lithio-propyl)benzamide [(8), (9)], which by treatment with different electrophiles (H2O, D2O, Me2S2, CO2, Pr1CHO, PhCHO, Me2CO, Ph2CO, and O2) yields the expected functionalized benzamides [(10), (11)]. The acidic and basic hydrolysis of compounds (10) and (11) gives different
2-氯乙基和 3-氯丙基苯甲酰胺与 N-丁基锂和萘化锂在 -78°C 至 -50°C 的温度范围内连续反应,产生 N-锂基-N-(2-锂乙基)- 和 N-锂基-N-(3-锂基-丙基)苯甲酰胺 [(8), (9)],通过用不同的亲电试剂(H2O、D2O、Me2S2、CO2、Pr1CHO、PhCHO、Me2CO、Ph2CO 和 O2)处理得到预期的官能化苯甲酰胺 [(10), 化合物 (10) 和 (11) 的酸性和碱性水解根据底物的结构和反应条件得出不同的结果。