Borylene Metathesis through [2+2] Cycloaddition

Abstract

From MnB to MnC: The first example of a concerted borylene metathesis through a clean cycloaddition–cycloreversion sequence is established, emphasizing the decisive influence of boron-bound substituents, and alkyl groups in particular, on the reactivity of borylene complexes. Cyclic reaction intermediates were characterized by X-ray diffraction analysis. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z702982_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.