Cationic Terminal Borylene Complexes: A Synthetic and Mechanistic Investigation of MB Metathesis Chemistry

Abstract

Halide abstraction chemistry has been exploited to generate the cationic terminal borylene complex 1, which reacts with Ph3PS or Ph3AsO to form 3 and 4. In the case of the corresponding reaction with Ph3PO, the intermediate 2 can be isolated, which provides evidence for a two-step addition/substitution mechanism for the overall metathesis reaction. Supporting information for this article (crystal structure data for 2 and 6, and data for 4 a, 4 b, 5 a, and 5 b) are available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2005/z502343_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.