New Methods for Synthesis of α,β-Unsaturated Carboxylic Esters from Carbonyl Compounds Using Monoanions of Dithiocarbonates, and Dianions of Ethyl Mercaptoacetate and Ethyl 2-Mercaptopropionate
The lithium enolates of O-alkyl S-alkoxycarbonylmethyl dithiocarbonates and monothiocarbonates were found to be efficient reagents for the synthesis of α,β-unsaturated esters from carbonylcompound...
Benzoyl Shift: A New Approach to Reverse Regioselectivity in the Monoprotection of vic-Diols
作者:Camille Oger、Jean-Marie Galano、Aurélien de la Torre、Valérie Bultel-Poncé、Thierry Durand
DOI:10.1055/s-0035-1561496
日期:——
monoprotected vic-diols is described. Triggered under mild conditions, this transformation allows regioselective protection of the least acidic hydroxyl function of an activated vic-diol. The benzoyl shift in monoprotected vic-diols is described. Triggered under mild conditions, this transformation allows regioselective protection of the least acidic hydroxyl function of an activated vic-diol.