One-pot cross-metathesis/tandem carbonyl ylide formation–intramolecular cycloaddition of an unsaturated 2-diazo-3,6-diketoester
作者:David M. Hodgson、Deepshikha Angrish、Agnès H. Labande
DOI:10.1039/b515943a
日期:——
Dicarbonyl-stabilised diazo functionality is tolerated during alkene cross-metathesis using Grubbs' catalyst, but undergoes subsequent tandem carbonylylideformation-intramolecular 1,3-dipolar cycloaddition on addition of catalytic Rh2(OAc)4 in a one-pot operation.
Oxapolycycles from One-Pot Cross-Metathesis/Carbonyl Ylide Formation-Intramolecular Cycloaddition of α-Diazo-β-keto Esters
作者:David M. Hodgson、Deepshikha Angrish
DOI:10.1002/adsc.200600306
日期:2006.11
Chemoselective cross-metathesis of unsaturated α-diazo-β-ketoesters using Grubbs’ 2nd generation catalyst, followed by Rh2(OAc)4-catalysed tandem carbonylylideformation-intramolecularcycloaddition is demonstrated. The two different catalytic metallocarbene transfer reactions have also been successfully carried out in a one-pot procedure, which allows rapid generation of molecular complexity in