PhI(OAc)<sub>2</sub>-mediated trifluoromethylthiolation/oxidative cyclization of ynamides
作者:Shixuan Su、Zhipeng Yan、Xingyuan Ye、Jingyang Wang、Yuan Li、Guangke He
DOI:10.1039/d1ob01642c
日期:——
A PhI(OAc)2-mediated trifluoromethylthiolation/oxidative cyclization of ynamides with the Shen reagent has been established herein, providing a facileaccess to CF3S-substituted oxazolidine-2,4-diones bearing a quaternary carbon center in 38–85% yields with chemoselectivities of up to 99/1.
2(3H)-Oxazolones from α-Hydroxy Amides and Keteneylidenetriphenylphosphorane via a Phoshorus Ylide Cascade
作者:Jonas Löffler、Rainer Schobert
DOI:10.1002/jlac.199719970132
日期:1997.1
activity”. Evidence for the proposed mechanism is provided by trapping the intermediate ylide species with suitable carbonyl compounds. This technique may also be used to exclusively prepare the 2,4-oxazolidinediones 13 in good yields.
作者:Seymour L. Shapiro、Ira M. Rose、Frank C. Testa、Eric Roskin、Louis Freedman
DOI:10.1021/ja01533a042
日期:1959.12
DE728036
申请人:——
公开号:——
公开(公告)日:——
Synthesis of oxazolidine-2,4-diones by a tandem phosphorus-mediated carboxylative condensation–cyclization reaction using atmospheric carbon dioxide
作者:Wen-Zhen Zhang、Tian Xia、Xu-Tong Yang、Xiao-Bing Lu
DOI:10.1039/c5cc01530h
日期:——
A novel access to oxazolidine-2,4-diones using atmospheric CO2 and readily available substrates under mild and transition-metal-free conditions is developed.