Ru2 can do it! Substitution of the OH moiety in propargylic alcohols by hydride proceeds smoothly with triethylsilane by catalysis with the thiolate-bridged diruthenium complex 1 (see scheme; Cp*=η5-C5Me5). This reaction gives the corresponding alkynes in good to high yields with complete selectivity, in contrast to a monoruthenium-catalyzed hydrosilylation of propargylic alcohols with silanes.
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Nishibayashi et al. (2006) studied this question.
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