Synthesis of α-diaminomethylenebutyrolactams by the reaction of α-cyanobutyrolactams with<i>n</i>-trimethylsilylamines
作者:Fumi Okabe、Syouhei Nakamura、Kenji Yamagata
DOI:10.1002/jhet.5570440137
日期:2007.1
Successive treatment of α-cyanobutyrolactams 1 with N-trimethylsilylamines and water gave the corresponding α-diaminomethylenebutyrolacatms 2 in good yields. In the NOESY spectra of 2, the E isomer, the NOE observed between β-CH2 (butyrolactam) and N-CH2 (morpholine, pyrrolidine) or N-CH3 (dimethylamine) indicated a cis configuration of these groups.
用N-三甲基甲硅烷基胺和水连续处理α-氰基丁内酰胺1,以良好的收率得到相应的α-二氨基亚甲基丁酰胺类2。在的NOESY波谱2中,ë异构体中,βNOE-CH之间观察到2(丁)和Ñ -CH 2(吗啉,吡咯烷)或ñ -CH 3(二甲基胺)表示的顺式这些基团的结构。