Journal
TETRAHEDRON LETTERS
Volume 48, Issue 48, Pages 8475-8478Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2007.09.176
Keywords
bis(pentafluorophenyl)borane-dimethyl sulfide complex; tris(pentafluorophenyl)borane; borane-dimethyl sulfide complex; hydroboration; pinacolborane
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A solution of bis(pentafluorophenyl)borane-dimethyl sulfide complex in hexane was generated by redistribution between tris(pentafluorophenyl)borane and borane-dimethyl sulfide complex. In the resulting solution a stoichiometric hydroboration of alk-1-yne with pinacolborane proceeded well at room temperature to afford (E)-alk-1-enylboronic acid pinacol ester in high yield. Bis(pentafluorophenyl)borane-dimethyl sulfide complex served as a mediator for the hydroboration. (c) 2007 Elsevier Ltd. All rights reserved.
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