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1,3-Dipolar cycloaddition of diazocompounds to 1-alkenylboronic esters

✍ Scribed by Mohammed Jazouli; Bertrand Carboni; Robert Carrié; Mohammed Soufiaoui; Loïc Toupet

Book ID: 102228874
Publisher: John Wiley and Sons
Year: 1994
Tongue: English
Weight: 488 KB
Volume: 5
Category: Article
ISSN: 1042-7163
DOI: 10.1002/hc.520050516

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✦ Synopsis

A variety of diazo compounds was added to the parent vinylboronic ester derived from pinacol. The reactivity of some substituted I -alkenylboronic esters is also briefly examined. The nonisolated primary adducts spontaneously rearrange via a I ,3-boron migration and lead to I -borylated-2-pyrazolines. The structure of one of these compounds has been established by X-ray difiaction analysis.

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