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Start Over Author "Wei-Chun Shih" Journal angewandte chemie international edition
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1. Synthesis of Triborylalkenes from Terminal Alkynes by Iridium-Catalyzed Tandem CH Borylation and Diboration

Author

Wei-Chun Shih, Jia Zhou, Joseph H. Reibenspies, Oleg V. Ozerov, and Chun-I Lee

Subjects
chemistry.chemical_classification, chemistry.chemical_element, Alkyne, Nanotechnology, Homogeneous catalysis, General Medicine, General Chemistry, Borane, Borylation, Combinatorial chemistry, Catalysis, chemistry.chemical_compound, Hydroboration, chemistry, Iridium, Pincer ligand
Abstract

A two-step reaction to convert terminal alkynes into triborylalkenes is reported. In the first step, the terminal alkyne and pinacolborane (HBpin) are converted into an alkynylboronate, which is catalyzed by an iridium complex supported by a SiNN pincer ligand. In the second step, treatment of the reaction mixture with CO generates a new catalyst which mediates dehydrogenative diboration of alkynylboronate with pinacolborane. The mechanism of the diboration remains unclear but it does not proceed via intermediacy of hydroboration products or via B2 pin2.

Published
2015

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