[1,5]-Hydride Shift Triggered N-Dealkylative Cyclization into 2-Oxo-1,2,3,4-tetrahydroquinoline-3-carboxylates via Boronate Complexes
作者:Elvira R. Zaitseva、Dmitrii S. Ivanov、Alexander Yu. Smirnov、Andrey A. Mikhaylov、Nadezhda S. Baleeva、Mikhail S. Baranov
DOI:10.3390/molecules27165270
日期:——
A new simple one-pot two-step protocol for the synthesis of 2-oxo-1,2,3,4-tetrahydroquinoline-3-carboxylate from 2-(2-(benzylamino)benzylidene)malonate under the action of BF3·Et2O was developed. It was shown that the reaction proceeds through the formation of a stable iminium intermediate containing a difluoroboryl bridge in the dicarbonyl fragment of the molecule.
BF3·Et2O作用下2-(2-(苄基氨基)亚苄基)丙二酸酯合成2-氧代-1,2,3,4-四氢喹啉-3-羧酸盐的简单一锅两步法发展了。结果表明,该反应通过在分子的二羰基片段中形成含有二氟硼基桥的稳定亚胺中间体来进行。