Tetraarylphosphonium Salt-Catalyzed Synthesis of Oxazolidinones from Isocyanates and Epoxides
作者:Yasunori Toda、Shuto Gomyou、Shoya Tanaka、Yutaka Komiyama、Ayaka Kikuchi、Hiroyuki Suga
DOI:10.1021/acs.orglett.7b02722
日期:2017.11.3
Preparation of a range of oxazolidinones, including enantioenriched N-aryl-substituted oxazolidinones, in which tetraarylphosphonium salts (TAPS) catalyze the [3 + 2] coupling reaction of isocyanates and epoxides effectively, is described. The key finding is a Brønsted acid/halide ion bifunctional catalyst that can accelerate epoxide ring opening with high regioselectivity. Mechanistic studies disclosed
Described herein are compounds, pharmaceutical compositions and methods for the inhibition of RAF kinase mediated signaling. Said compounds, pharmaceutical compositions and methods have utility in the treatment of human disease and disorders.
N-aryl-3-aryl-4,5-dihydro-1H-pyrazole-1-carboxamides, processes for their production, insecticidal compositions containing them and methods for combatting insects
申请人:ROHM AND HAAS COMPANY
公开号:EP0153127B1
公开(公告)日:1991-04-03
Glycidyl Tosylate is a Viable Starting Material for Oxazolidinone Antibacterials