An Oxidant-Free and Mild Strategy for Quinazolin-4(3H)-One Synthesis via CuAAC/Ring Cleavage Reaction
作者:Yueling He、Zhongtao Yang、Danyang Luo、Xiai Luo、Xiaodong Chen、Weiguang Yang
DOI:10.3390/molecules28155734
日期:——
efficient synthesis of phenolic quinazolin-4(3H)-ones was achieved by simply stirring a mixture of 2-aminobenzamides, sulfonyl azides, and terminal alkynes. The intermediate N-sulfonylketenimine underwent two nucleophilic additions and the sulfonyl group eliminated through the power of aromatization. The natural product 2-(4-hydroxybenzyl)quinazolin-4(3H)-one can be synthesized on a large scale under
Atropoenantioselective synthesis of heterobiaryl N-oxides via dynamic kinetic resolution
作者:Xi Yuan、Jian Wang
DOI:10.1007/s11426-022-1402-9
日期:2022.12
A highly efficient enantioselective construction of heterobiaryl N-oxides was developed. A series of axially chiral heterobiaryl N-oxides were generated via the cascade reaction of aminobenzamides with heterobiaryl aldehydes in the presence of chiral phosphoric acids. A number of atropisomers were afforded in moderate to good yields with excellent enantioselectivities and diastereoselectivities. Preliminary