Preparation of <i>Z</i>-α,β-Unsaturated Diazoketones from Aldehydes. Application in the Construction of Substituted Dihydropyridin-3-ones
作者:Isac G. Rosset、Antonio C. B. Burtoloso
DOI:10.1021/jo401191s
日期:2013.9.20
The stereoselective preparation of α,β-unsaturateddiazoketones with Z geometry is described from aldehydes and a new olefination reagent. When prepared from amino aldehydes, these diazoketones could be converted to substituted dihydropyridin-3-ones in just one step, after an intramolecular N–H insertion reaction. The straightforward synthesis of a natural trihydroxylated piperidine demonstrates the