Versatile One-Pot Reductive Alkylation of Lactams/Amides via Amide Activation: Application to the Concise Syntheses of Bioactive Alkaloids (±)-Bgugaine, (±)-Coniine, (+)-Preussin, and (−)-Cassine
作者:Kai-Jiong Xiao、Yu Wang、Ke-Yin Ye、Pei-Qiang Huang
DOI:10.1002/chem.201002054
日期:2010.11.15
Direct entry: One‐pot reductive alkylation of lactams/amides with Grignard reagents has been realized via lactam/amide activation with Tf2O. This method opens a direct entry to α‐alkylated amines. The versatility of the method is illustrated by the concise syntheses of bioactive alkaloids (±)‐bgugaine, (±)‐coniine, (+)‐preussin, and (−)‐cassine.
直接输入:内酰胺的一锅法还原性烷基化/与格氏试剂的酰胺已经通过内酰胺/酰胺活化与TF实现2 O.这种方法将打开一个直接进入α -烷基化的胺。该方法的多功能性由生物活性生物碱(±)-古吉茄碱,(±)-芥子碱,(+)-普鲁素和(-)-酪氨酸的简明合成说明。