ol0483504_si_001.pdf (29.93 kB)
Preparation of 5-Hydroxy-1-alkenyboronates from 1-Alkynylboronates, Cp2ZrCl2/2EtMgBr, and Aldehydes
journal contribution
posted on 2004-11-11, 00:00 authored by Abed Al Aziz Quntar, Morris Srebnik1-Alkynylboronates form five-membered zirconacycles with Cp2ZrCl2/2-EtMgBr as indicated by deuterium labeling. The zirconacycles add aldehydes
to form seven-membered zirconacycles. Hydrolysis of the latter provides 5-hydroxy-1-alkenylboronates in fair to good isolated yields. Both
aliphatic and aromatic aldehydes undergo insertion.