Palladium-catalysed regioselective addition reaction of ethyl phenylphosphinate with terminal acetylenes: ligand- and solvent-dependent regioselectivity‡
Literature Information
Satish Kumar Nune, Masato Tanaka
Palladium–1,2-bis(diphenylphosphino)ethane complex catalyses regioselective Markovnikov addition of ethyl phenylphosphinate to terminal alkynes in toluene, while the use of tri-tert-butylphosphine as the ligand or ethanol as the solvent leads to regioselectivity reversal.
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![2-{[(1R,2S)-2-Aminocyclohexyl]amino}-4-{[3-(2H-1,2,3-triazol-2-yl)phenyl]amino}-5-pyrimidinecarboxamide structure 2-{[(1R,2S)-2-Aminocyclohexyl]amino}-4-{[3-(2H-1,2,3-triazol-2-yl)phenyl]amino}-5-pyrimidinecarboxamide structure](https://static.chemtradehub.com/structs/137/1370261-96-3-40df.webp)