A new route to a 2-phosphanaphthalene

Org Lett. 2012 Sep 21;14(18):4974-5. doi: 10.1021/ol302278p. Epub 2012 Aug 31.

Abstract

The reaction between methylenechlorophosphine-pentacarbonyltungsten and an isobenzofuran affords a [4 + 2] adduct whose oxygen bridge is broken by BBr(3), leading to a 2-phosphanaphthalene.