Synthesis of alkynyl chlorides

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A mild and metal-free method for the chlorodeboronation of organotrifluoroborates using trichloroisocyanuric acid (TCICA) converts aryl-, heteroaryl-, alkenyl-, alkynyl-, and alkyltrifluoroborates into the corresponding chlorinated products in good yields. This method tolerates a broad range of functional groups.
G. A. Molander, L. N. Cavalcanti, J. Org. Chem., 2011, 76, 7195-7203.