New amine-stabilized deuterated borane–tetrahydrofuran complex (BD3–THF): convenient reagent for deuterium incorporations
作者:Robert C. Todd、M. Mahmun Hossain、Kanth V. Josyula、Peng Gao、John Kuo、C.T. Tan
DOI:10.1016/j.tetlet.2007.01.134
日期:2007.3
Convenient methods for the preparation of BD3–THF complex were developed. Certain amines stabilize the BD3–THF for long-term storage. Regioselectivity studies were carried out with the new amine-stabilized BD3–THF with representative olefins. Hydroboration of olefins provides a convenient tool for making corresponding deuterated alcohols after oxidation.
Mechanistic study of the rhodium(I)-catalyzed hydroboration reaction
作者:David A. Evans、Gregory C. Fu、Benjamin A. Anderson
DOI:10.1021/ja00043a010
日期:1992.8
The objective of this study has been to elucidate the mechanism of the rhodium(I)-catalyzed hydroboration process. Evidence that the reaction proceeds through a multistep pathway analogous to that of transition metal catalyzed olefinhydrogenation is presented. Deuterium labeling experiments reveal reversible elementary steps in the catalytic cycle; the level of reversibility is found to be substrate-dependent