Synthesis of pyrrolo[1,3]diazepines by a dipolar cycloaddition—retro-Mannich domino reaction
作者:Mary Liang、Cecilia Saiz、Chiara Pizzo、Peter Wipf
DOI:10.1016/j.tetlet.2009.09.107
日期:2009.12
Microwave irradiation facilitated the synthesis of 4-arylthio-3-oxazolin-5-ones from ethyl cyanoformate, thiophenol, and cyclic ketones. Subsequent decarboxylation and in situ [3+2] cycloaddition provided novel 2,3,4,5-tetrahydro-1H-pyrrolo[1,2-c][1,3]diazepine scaffolds after a spontaneous retro-Mannich domino reaction.
微波辐射促进了 4-arylthio-3-oxazolin-5-ones 从氰基甲酸乙酯、苯硫酚和环酮的合成。随后的脱羧和原位 [3+2] 环加成在自发的逆曼尼希多米诺反应后提供了新的 2,3,4,5-四氢-1 H-吡咯并[1,2- c ][1,3]二氮杂支架。