Conversion of Dibenzoxaphosphinines into 2-Hydroxybiphenyl-2′-ylphosphane Ligands and Their BH3 Adducts: The O-Hδ+···Hδ--B Hydrogen-Hydrogen Bond
作者:Piotr Wawrzyniak、Markus K. Kindermann、Joachim W. Heinicke、Peter G. Jones
DOI:10.1002/ejoc.201001242
日期:2011.1
were converted into air-stable borane adducts 6. The latter were unable to undergo O-acylation. Acylation of 5 followed by borane protection afforded O-acyloxybiphenylylphosphane-borane adducts, as demonstrated by the formation of compounds 7a and 8a. X-ray crystal structure analyses revealed intermolecular O-H center dot center dot center dot H-B hydrogen-hydrogen bonds; for compound 6b the average H