Ruthenium(II) Complexes with η<sup>6</sup>-Coordinated 3-Phenylpropanol and 2-Phenylethanol as Catalysts for the Tandem Isomerization/Claisen Rearrangement of Diallyl Ethers in Water
作者:Beatriz Lastra-Barreira、Javier Francos、Pascale Crochet、Victorio Cadierno
DOI:10.1021/acs.organomet.8b00187
日期:2018.10.22
A series of half-sandwich ruthenium(II) complexes containing η6-coordinated 2-phenylethanol and 3-phenylpropanol ligands, namely [RuCl2η6-C6H5CH2(CH2)nCH2OH}(PR3)] (PR3 = PMe3, PPh3, P(OMe)3, P(OEt)3, P(OiPr)3, P(OPh)3; n = 0 (1a–f), 1 (2a–f)), have been investigated as catalysts for the tandem isomerization/Claisen rearrangement of diallyl ethers into γ,δ-unsaturated aldehydes using, for the first
一系列含有η半夹心钌(II)配合物的6配位的2-苯基乙醇和3-苯基丙醇配体,即将[RuCl 2 η 6 -C 6 H ^ 5 CH 2(CH 2)Ñ CH 2 OH}(PR 3)](PR 3 = PMe 3,PPh 3,P(OMe)3,P(OEt)3,P(O i Pr)3,P(OPh)3;n = 0(1a – f),1(2a – f))已被首次用作水为溶剂将二烯丙基醚串联异构化/克莱森重排成γ,δ-不饱和醛的催化剂。在活动和区域选择性方面的最佳结果与3-苯基丙醇衍生物获得将[RuCl 2(η 6 -C 6 H ^ 5 CH 2 CH 2 CH 2 OH)P(OET)3 }](2D)。因此,仅使用1 mol%的该配合物与NaOH(2 mol%)结合,就可以在相对温和的热条件下(100°C)以高收率和短时间将不同的二烯丙基醚方便地转化为相应的醛。