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Stereospecific hydrohalogenation reactions of electron‐deficient alkynes, i.e., 2‐alkynoic acids, 2‐alkynoates, 2‐propynamides, 2‐propynenitrile, 1‐alkynyl phosphonates/phosphine oxides, 1‐alkynyl sulfoxides/triflones, and 1‐alkynyl iodonium salts with lithium or sodium halides to afford Z‐alkenyl derivatives and their applications in synthesis of important intermediates as well as natural products were reviewed.
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Lu et al. (1998) studied this question.
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