1,3-Diol Synthesis via Controlled, Radical-Mediated C−H Functionalization
作者:Ke Chen、Jeremy M. Richter、Phil S. Baran
DOI:10.1021/ja802491q
日期:2008.6.1
The invention of a method for the synthesis of 1,3-diols from the corresponding alcohols is described, via controlled, radical-mediated C-H functionalization. The sequence described herein entails near quantitative conversion to the corresponding trifluoroethyl carbamate, followed by a variant of the Hofmann-Löffler-Freytag reaction, cyclization, and hydrolysis to provide the 1,3-diols. In addition
Synthesis of 6-membered cyclic carbonates from 1,3-diols and low CO<sub>2</sub> pressure: a novel mild strategy to replace phosgene reagents
作者:Georgina L. Gregory、Marion Ulmann、Antoine Buchard
DOI:10.1039/c5ra07290e
日期:——
Low pressure carbondioxide is used as the carbonation agent in a simple, safe and efficient procedure for the synthesis of 6-membered cyclic carbonates from 1,3-diols. Using readily available reagents and proceeding at room temperature, this route offers a novel mild alternative to phosgenederivatives.
Efficient reduction of cyclic and linear organic carbonates catalyzed by a readily available earth alkaline catalyst has been achieved. The described homogenous reaction based on a ligand-free magnesiumcatalyst provides an indirect route for the conversion of CO2 into valuable alcohols. The reaction proceeds with high yields under mild reaction conditions, with low catalyst loading and short reaction times