IntramolecularC-thiocarbamoylation of aroxy(isothiocyanato)phosphonium salts

Isothiocyanatophosphonium salts bearing an aroxy group at the phosphorus atom have been obtained for the first time. As found, these compounds undergo an intramolecular heterocyclization to give hitherto unknown benzoxazaphosphininethiones or cyanoiminophosphoranes, according to the nature of the substituents on the aryl ring. © 2008 Wiley Periodicals, Inc. Heteroatom Chem 19:667–670, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20491