Synthesis 2006(7): 1148-1154  
DOI: 10.1055/s-2006-926388
PAPER
© Georg Thieme Verlag Stuttgart · New York

The First Preparation of 4-Substituted 1,2-Oxaborol-2(5H)-ols and their Palladium­-Catalyzed Cross-Coupling with Aryl Halides to Prepare Stereodefined­ 2,3-Disubstituted Allyl Alcohols

Guo-Hua Fang, Zheng-Jun Yan, Jun Yang, Min-Zhi Deng*
State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Graduate School of the Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, P. R. of China
Fax: +86(21)64166128; e-Mail: dengmz@mail.sioc.ac.cn;
Further Information

Publication History

Received 30 September 2005
Publication Date:
08 March 2006 (online)

Abstract

4-Substituted 1,2-oxaborol-2(5H)-ols were prepared through copper-catalyzed carbomagnesation of propargyl alcohol, followed by the transmetallation of magnesium to boron in a one-pot procedure. The Suzuki-Miyaura cross-coupling of these new 2,2-disubstituted alkenylboronic acids with aryl halides afforded stereodefined 2,3-disubstituted allyl alcohols in good to excellent yields.