Water-soluble ruthenium(ii) catalysts [RuCl2(η6-arene){P(CH2OH)3}] for isomerization of allylic alcohols and alkyne hydration
作者： Victorio Cadierno , Pascale Crochet , Sergio E. García-Garrido , José Gimeno
DOI: 10.1039/B411177J
关键词:
摘要: The novel water-soluble ruthenium(II) complexes [RuCl2(η6-arene){P(CH2OH)3}] 2a–c and [RuCl(η6-arene){P(CH2OH)3}2][Cl] 3a–c have been prepared in high yields by reaction of dimers [{Ru(η6-arene)(μ-Cl)Cl}2] (arene = C6H61a, p-cymene 1b, C6Me61c) with two or four equivalents P(CH2OH)3, respectively. Complexes 2/3a–c are active catalysts the redox isomerization several allylic alcohols into corresponding saturated carbonyl compounds under water/n-heptane biphasic conditions. Among them, neutral derivatives [RuCl2(η6-C6H6){P(CH2OH)3}] 2a [RuCl2(η6-p-cymene){P(CH2OH)3}] 2b show highest activities (TOF values up to 600 h−1; TON 782). also catalyze hydration terminal alkynes.
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