RHODIUM-CATALYZED ENANTIOSELECTIVE HYDROBORATION OF ALKENYLBORONIC ESTERS WITH CATECHOLBORANE

Authors
WIESAUER C WEISSENSTEINER W
Citation
C. Wiesauer et W. Weissensteiner, RHODIUM-CATALYZED ENANTIOSELECTIVE HYDROBORATION OF ALKENYLBORONIC ESTERS WITH CATECHOLBORANE, Tetrahedron : asymmetry, 7(1), 1996, pp. 5-8
Citations number
31
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear","Chemistry Physical
Journal title
Tetrahedron : asymmetry → ACNP
ISSN journal
09574166
Volume
7
Issue
1
Year of publication
1996
Pages
5 - 8
Database
ISI
SICI code
0957-4166(1996)7:1<5:REHOAE>2.0.ZU;2-X
Abstract
Alkenylboronic esters such as (E)-2-(2-phenylethenyl)-1,3,2-dioxaborol ane were subjected to catalytic hydroboration with catecholborane and with use of neutral and cationic rhodium complexes modified by various diphosphine ligands. The resulting 1,2-diboryl intermediate was oxidi sed with alkaline hydrogen peroxide to give the corresponding 1,2-diol with enantioselectivities up to 79 % e.e.