Silver-Catalyzed Regio- and Stereoselective Addition of Carboxylic Acids to Ynol Ethers
作者:Jing Yin、Yihui Bai、Mengyi Mao、Gangguo Zhu
DOI:10.1021/jo501615a
日期:2014.10.3
enol esters in good yields with excellent regio- and stereoselectivity. Meaningfully, the Ni-catalyzed selective coupling of alkenyl C–OPiv bonds of (Z)-α-alkoxy enol esters with boronic acids enables a convenient route to the access of (E)-enol ethers. As such, the two-step procedure, consisted of a hydrocarboxylation and a subsequent Suzuki–Miyaura coupling, offers a formal trans hydroarylation of
One-Pot Reaction of Carboxylic Acids and Ynol Ethers for The Synthesis of β-Keto Esters
作者:Linwei Zeng、Zhencheng Lai、Sunliang Cui
DOI:10.1021/acs.joc.8b02715
日期:2018.12.7
An one-pot reaction of carboxylic acids and ynol ethers for the synthesis of β-keto esters has been developed. Under promotion of Ag2O, various carboxylic acids and ynol ethers could transform to α-acyloxy enol esters, which undergo a following DMAP-catalyzed rearrangement to deliver β-keto esters rapidly. This method provides a direct approach to β-keto esters from carboxylic acids without any preactivation
Multicomponent Synthesis of Tetrahydroisoquinolines
作者:Linwei Zeng、Bo Huang、Yangyong Shen、Sunliang Cui
DOI:10.1021/acs.orglett.8b01159
日期:2018.6.15
A multicomponentsynthesis of tetrahydroisoquinolines from carboxylic acids, alkynyl ethers, and dihydroisoquinolines is described. This process features readily available starting materials, simple experimental procedures for achievement of molecule complexity, and structural diversity. The preliminary control experiment and crossover reaction provide important insight into the reaction mechanism