[EN] IMMUNOSUPPRESSIVE AGENT, PREPARATION METHOD THEREFOR AND PHARMACEUTICAL USE THEREOF<br/>[FR] AGENT IMMUNOSUPPRESSEUR, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION PHARMACEUTIQUE<br/>[ZH] 免疫抑制剂及其制备方法和在药学上的应用
Regio‐ and Stereoselective Chan‐Lam‐Evans Enol Esterification of Carboxylic Acids with Alkenylboroxines
作者:Luuk Steemers、Linda Wijsman、Jan H. van Maarseveen
DOI:10.1002/adsc.201800914
日期:2018.11.5
Efficient and scalable Cu(II)‐mediated enol esterification methodology of carboxylicacids from alkenyl boroxines and boronic acids is presented. The reaction shows a wide scope in aliphatic and aromatic carboxylicacids in combination with several alkenyl boroxines. In the case of 2‐substituted alkenyl boroxines the double bond configuration was fully retained in the enol ester product. Also N‐hydroxyimides