Disclosed is a composition comprising (A) at least one compound selected from the group consisting of an ether compound having two or more ether groups, a trivalent phosphorus compound, and a ketone compound, (B) a boron trihalide, and (C) an episulfide compound.
US9334371B2
申请人:——
公开号:US9334371B2
公开(公告)日:2016-05-10
US9738757B2
申请人:——
公开号:US9738757B2
公开(公告)日:2017-08-22
Effect of fluorine and trifluoromethyl substitution on the donor properties and stereodynamical behaviour of triarylphosphines
作者:James A. S. Howell、Natalie Fey、Jonathan D. Lovatt、Paul C. Yates、Patrick McArdle、Desmond Cunningham、Einat Sadeh、Hugo E. Gottlieb、Zeev Goldschmidt、Michael B. Hursthouse、Mark E. Light
DOI:10.1039/a903211h
日期:——
A series of 2-, 3- or 4-trifluoromethyl substituted triarylphosphines and their oxide, chalcogenide and Fe(CO)4 derivatives have been prepared and characterised spectroscopically and crystallographically. Electronic effects of CF3 substitution are cumulative and felt equally in the 2, 3 or 4 position. Substitution in the 2 position substantially hinders the complexing ability for steric reasons. Correlated P–C rotation in the 2-substituted derivatives has been analysed by variable temperature NMR and molecular mechanics calculations.