Reversible ring-opening in the hydrolysis of spirophosphoranes
作者:Glenn H. McGall、Robert A. McClelland
DOI:10.1039/c39850000560
日期:——
The spirophosphorane (1b)(5-phenyloctamethyl-1,4,6,9-tetraoxa-5-phosphaspiro[4.4]nonane) undergoes acid-catalysed ligand exchange 107 times faster than acid-catalysed hydrolysis; these two processes have a common phosphonium ion intermediate which has a large preference for reaction with its internal hydroxy group over capture by an external water molecule.