Selective reactions in polyethylene glycol. Hydrogenation of acetylenes by NaBH 4–PdCl 2 in polyethylene glycol–methylene dichloride

…, T Tsukanaka, T Nomoto, Y Ayaguchi…

Index: Suzuki, Nobutaka; Tsukanaka, Tsuneaki; Nomoto, Tateo; Ayaguchi, Yasuo; Izawa, Yasuji Journal of the Chemical Society, Chemical Communications, 1983 , # 9 p. 515 - 516

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Abstract

The NaB H,-PdCI,-polyethylene glycol-CH,CI, system has been found to be effective for the hydrogenation of acetylenic triple bonds to the corresponding cis-alkenes. ... The properties of polyethylene glycol (PEG) make it an excellent substitute for crown ethers in many reactions, and its use as a co-solvent has been reported.l*, We have now found that selective hydrogenation of acetylenic triple bonds takes place with NaBH,-PdCI, in PEG-CH,Cl, system^,^*^ providing the first ...