Directive effects in the monohydroboration of alkynes and enynes

G Zweifel, GM Clark, NL Polston

文献索引：Zweifel,G. et al. Journal of the American Chemical Society, 1971 , vol. 93, p. 3395 - 3399

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被引用次数: 59

摘要

Abstract: Monohydroboration of terminal alkynes such as 1-octyne and phenylacetylene with dicyclohexylborane or thexylborane (2, 3-dimethyl-2-butylborane) places the boron nearly exclusively at the terminal position of the triple bond. 2-Methyl-1-buten-3-yne and 1- ethynylcyclohexene react similarly with these mono-and dialkylboranes to afford high yields of the corresponding terminal dienylboranes. The direction of addition of ...