Brønsted Acid Catalyzed Asymmetric Propargylation of Aldehydes
作者:Pankaj Jain、Hao Wang、Kendall N. Houk、Jon C. Antilla
DOI:10.1002/anie.201107407
日期:2012.2.6
Which gets activated? A versatile and highly enantioselective chiral Brønstedacidcatalyzed method for the propargylation of aldehydes is described to provide a range of chiral homopropargylic alcohols. Computational studies support the belief that the chiral phosphoric acid activates the allenyl boronic acid pinacol ester reagent rather than the aldehyde.
Chiral Brønsted Acid Catalyzed Enantioselective Propargylation of Aldehydes with Allenylboronate
作者:Leleti Rajender Reddy
DOI:10.1021/ol300075n
日期:2012.2.17
A highly enantioselective chiral Brønstedacidcatalyzedpropargylation of aldehydes with allenylboronate is described. The reaction is shown to be practical and quite general with a broad substrate scope covering aryl, polyaryl, heteroaryl, α,β-unsaturated, and aliphatic aldehydes.
Diastereoselective Alkene Hydroesterification Enabling the Synthesis of Chiral Fused Bicyclic Lactones
作者:Zhanglin Shi、Chaoren Shen、Kaiwu Dong
DOI:10.1002/chem.202103318
日期:2021.12.23
alkenes afforded chiral γ-butyrolactones bearing two stereocenters. Employing the carbonylation products as key intermediates, the route from alkenes with single chiral center to chiral THF-fused bicyclic γ-lactones containing three stereocenters was developed.