Development of
<i>N</i>
‐Phosphinomethyl‐Substituted NHC‐Nickel(0) Complexes as Robust Catalysts for Acrylate Salt Synthesis from Ethylene and CO
<sub>2</sub>
By using a nickel complex with an N-phosphinomethyl-N-heterocyclic carbene ligand (NHC-P), the reducing ability and thermal stability of the complex were improved considerably compared to the previously reported bipyridine and bisphosphine complexes, and acrylate salt was prepared from ethylene and CO2 with the highest TON ever reported for nickel systems even without using metallic zinc. Oxidative
Bis phosphine oxide flame retarded, rubber-modified, polyphenylene ether
申请人:American Cyanamid Company
公开号:US04293465A1
公开(公告)日:1981-10-06
Flame retardant, rubber-modified polyphenylene ether resin compositions are prepared using a phosphine oxide of the formula ##STR1## wherein R is cycloalkyl, phenyl, carbamoylethyl or carboalkoxyethyl; and Y is alkylene, substituted xylylene, and bis-(methyl)terephthalate.
Hellmann,H. et al., Justus Liebigs Annalen der Chemie, 1962, vol. 659, p. 49 - 63
作者:Hellmann,H. et al.
DOI:——
日期:——
Reduction of Functionalized Tertiary Phosphine Oxides with BH<sub>3</sub>
作者:Sylwia Sowa、Marek Stankevič、Anna Szmigielska、Hanna Małuszyńska、Anna E. Kozioł、K. Michał Pietrusiewicz
DOI:10.1021/jo502623g
日期:2015.2.6
A direct stereoselective conversion of tertiary hydroxyalkylphosphine oxides to the corresponding tertiary hydroxyalkylphosphineboranes involving facile reduction of the P=O bond by BH3 under mild conditions has been developed. The unprecedented facility of reduction of the strong P=O bond by BH3, a mild reducing agent, has been achieved through an intramolecular P=O center dot center dot center dot B complexation directed by proximal alpha- or beta-hydroxy groups present in the phosphine oxide structures. As established by two chemical correlations, the developed transformation of hydroxyalkylphosphine oxides into hydroxyalkylphosphine-boranes takes place with complete inversion of configuration at P.