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Scope of the triboration of terminal alkynes.[a]
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[a] Reaction conditions: 1 (0.2 mmol), B2pin2 (0.6 mmol), Cu(OAc)2 (0.02 mmol), PnBu3 (0.04 mmol), and acrylonitrile (0.2 mmol) in toluene (2 mL) at 80 °C. Yields of isolated products are given. [b] The reaction was performed on 5 mmol scale.
