A Novel Method for Michael Addition and Epoxidation of Chalcones in a Water Suspension Medium: A Completely Organic Solvent-Free Synthetic Procedure
摘要:
Very efficient Michael addition reactions of amines, thiophenol and methyl acetylacetate to chalcone, and epoxidation of chalcone derivatives with NaOCl, in a water suspension medium have been developed as completely organic solvent-free reactions.
Very efficient Michael addition reactions of amines, thiophenol and methyl acetylacetate to chalcone, and epoxidation of chalcone derivatives with NaOCl, in a water suspension medium have been developed as completely organic solvent-free reactions.
Asymmetric Synthesis of α-Keto Esters via Cu(II)-Catalyzed Aerobic Deacylation of Acetoacetate Alkylation Products: An Unusually Simple Synthetic Equivalent to the Glyoxylate Anion Synthon
作者:Kimberly M. Steward、Jeffrey S. Johnson
DOI:10.1021/ol200649u
日期:2011.5.6
alpha-keto esters is described using a copper(II)-catalyzed aerobic deacylation of substituted acetoacetate esters. The substrates for the title process arise from catalytic, enantioselectiveconjugateadditions and alkylation reactions of acetoacetate esters. The mild conditions do not induce racemization of the incipient enolizable alpha-keto ester. The reaction is tolerant of esters, certain ketones