Direct Production of Enaminones from Terminal Alkynes via Rhodium-Catalyzed Reaction of Formamides with N-Sulfonyl-1,2,3-triazoles
摘要:
A rhodium-catalyzed reaction of formamides with N-sulfonyl-1,2,3-triazoles is developed to formulate a new one-pot procedure for the direct synthesis of a-amino enaminones from terminal alkynes.
Direct Production of Enaminones from Terminal Alkynes via Rhodium-Catalyzed Reaction of Formamides with N-Sulfonyl-1,2,3-triazoles
摘要:
A rhodium-catalyzed reaction of formamides with N-sulfonyl-1,2,3-triazoles is developed to formulate a new one-pot procedure for the direct synthesis of a-amino enaminones from terminal alkynes.
A new procedure for the stereoselective synthesis of syn alpha-amino beta-oxy ketones is reported. It consists of two steps; in the first step, alpha-amino silyl enol ethers having a (Z) geometry are prepared from 1-alkynes via 1-sulfonyl-1,2,3-triazoles. In the second step, the silyl enol ethers undergo the TiCl4-mediated Mukaiyama aldolreaction with aldehydes to produce alpha-amino beta-oxy ketones