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Prof. Hiroto Yoshida, Shota Kawashima, Yuki Takemoto, Kengo Okada, Prof. Joji Ohshita and Prof. Ken Takaki Copper-Catalyzed Borylation Reactions of Alkynes and Arynes Angewandte Chemie International Edition 51

Version of Record online: 14 NOV 2011 | DOI: 10.1002/anie.201106706

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One, two, three, four: A copper(I)–phosphine complex catalyzes the diborylation of alkynes and arynes, and the tri- or tetraborylation of propargyl ethers (see scheme; pin=pinacolato). In the latter cases, the C[BOND]O bond(s) as well as the C[TRIPLE BOND]C bond are borylated in one pot. Furthermore, a diborylation product serves as an intermediate in the efficient synthesis of ortho-terphenyls with pharmacological activity.

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