Abstract

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-1 H-pyrrolo[1,2- c][1,3]diazepine scaffolds after a spontaneous retro-Mannich domino reaction.

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