Regioselective synthesis of 1,5-diarylpyrazole derivatives from hex-1-en-3-uloses
作者:Po-Yen Chen、Wei-Tsung Huang、Min-Tsang Hsieh、Chih-Shiang Chang、Hui-Chang Lin
DOI:10.1016/j.tet.2022.133070
日期:2022.11
1,5-diarylpyrazoles were synthesized by a two-step procedure startingfrom hex-1-en-3-uloses. The initial microwave-assisted oxidative Heck type C-glycosylation of hex-1-en-3-uloses with arylboronicacids in the presence of Pd(OAc)2 and DDQ afforded C-1 aryl enones. The resulting product further reacted with arylhydrazines in the presence of InCl3 and oxygen to give the 1,5-diarylpyrazoles in moderate