Reactions of (2,3-dimethylenetetramethylene)bis(dipropylborane) with carbonyl compounds

Autor: Gursky, M. E., Golovin, S. B., Ignatenko, A. V., Bubnov, Yu. N.
Zdroj: Russian Chemical Bulletin; January 1993, Vol. 42 Issue: 1 p139-143, 5p
Abstrakt: (2,3-Dimethylenetetramethylene)bis(dipropylborane) (1) prepared by borylation of 2,3-dimethylbutadienediyl dipotassium reacts with ketones to form symmetrical diols in a yield of 46–73%. [4+2]-Cycloaddition reactions of diborane1 with 1,2-dicarbonyl compounds proceed highly stereospecifically, affording onlycis-isomers of 4,5-dimethylenecyclohexane1, 2-diols.
Databáze: Supplemental Index