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[reaction: see text] A highly effective direct coupling of acid chloride with terminal alkynes catalyzed by PdCl(2)(PPh(3))(2)/CuI together with a catalytic amount of sodium lauryl sulfate as the surfactant and K(2)CO(3) as the base provided ynones in high yields in water.
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Liang et al. (2004) studied this question.
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