Reaction of water-soluble phosphines with disubstituted electrodeficient alkynes in H2O (D2O) gives rise either to mixtures of cis and trans (dideuterated) olefins or specifically to trans (dideuterated) olefins, by simple control of the phosphine amount. A cis-trans olefin isomerization catalyzed by sulfonated phosphines occurs in water and allows the obtention of specifically trans disubstituted
通过简单地控制膦的量,
水溶性膦与H 2 O(D 2 O)中的双取代电有效
炔烃的反应产生了顺式和反式(去
氘代)烯烃的混合物,或者特别是反式(去
氘代)烯烃的混合物。磺化膦催化的顺-反烯烃异构化反应在
水中发生,可从相应的顺式异构体中获得特定的反式二取代烯烃。