Direct Synthesis of β-Aminoenals through Reaction of 1,2,3-Triazine with Secondary Amines
作者:Ryan E. Quiñones、Christopher M. Glinkerman、Kaicheng Zhu、Dale L. Boger
DOI:10.1021/acs.orglett.7b01543
日期:2017.7.7
Simple and direct nucleophilic addition of secondary amines, including imidazole, to 1,2,3-triazine under mild reaction conditions (THF, 25–65 °C, 12–48 h), requiring no additives, cleanly provides β-aminoenals 4 in good yields (21 examples, 31–79%). The reaction proceeds by amine nucleophilic addition to C4 of the 1,2,3-triazine, in situ loss of N2, and subsequent imine hydrolysis to provide 4.
简单而直接的亲核加成的仲胺,包括咪唑,对1,2,3-三嗪反应条件温和(THF,25-65℃,12-48 h)中,不需要添加剂下,干净地提供β-aminoenals 4中产量高(21个例子,占31–79%)。该反应通过将胺亲核加成到1,2,3-三嗪的C4中,在原位损失N 2以及随后的亚胺水解以提供4来进行。