Configuration and isomerization of 2,4,5-substituted 1,3,2-dioxaborinanes

Abstract

Reaction of esters of isobutylboronic acid with 2-methyl-1-phenyl-1,3-propanediol and 2-benzyl-1,3-butanediol gave 2-isobutyl-5-methyl-4-phenyl- and 4-methyl-5-benzyl-1,3,2-dioxaborinanes respectively, with a preponderance of the cis-isomers in the mixtures. Cis-2-isobutyl-5-methyl-4-phenyl-1,3,2-dioxaborinane was converted to the trans isomer on heating to 150°C with a catalytic amount of ZnCl₂.

How to Cite
Kuznetsov, V. V.; Alekseeva, E. A.; Gren', A. I. Chem. Heterocycl. Compd. 1995, 31, 1132. [Khim. Geterotsikl. Soedin. 1995, 1291.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01165061