Preparation of ketones by catalytic reaction of diolefins with aldehydes
申请人:US RUBBER CO
公开号:US02517685A1
公开(公告)日:1950-08-08
GB647971
申请人:——
公开号:——
公开(公告)日:——
Verfahren zur Herstellung von ungesättigten und gesättigten Carbonylverbindungen
申请人:BASF Aktiengesellschaft
公开号:EP0447758B1
公开(公告)日:1994-08-03
Three-step synthetic pathway to fused bicyclic hydantoins involving a selenocyclization step
作者:Biljana M. Šmit、Radoslav Z. Pavlović
DOI:10.1016/j.tet.2014.12.088
日期:2015.2
the synthesis of conformationally constrained fusedbicyclic scaffold. They are assembled by a three-step reaction sequence from two variable building blocks (readily available β-ketoesters and alkenyl halides) by combining a Bucherer–Bergs reaction with a final selenium-promoted intramolecular cyclization as a key step. The chemoselectivity of this bicyclic hydantoin formation is strongly influenced