Metal carbene N–H insertion of chiral α,α′-dialkyl α-diazoketones. A novel and concise method for the stereocontrolled synthesis of fully substituted azetidines
作者:Antonio Carlos B. Burtoloso、Carlos Roque D. Correia
DOI:10.1016/j.tetlet.2004.03.036
日期:2004.4
The syntheses of all cis substituted azetidines were accomplished in few steps from L-serine in modest to high yields. The key step was based on a rhodium or copper carbenoid N-H insertion of alpha,alpha'-dialkyl-alpha-diazoketones to furnish cis-2,4-dialkyl-azetidin-3-ones as the only observable diastereoisomers. (C) 2004 Elsevier Ltd. All rights reserved.