Recyclable alkylated fac-Ir(ppy)(3) complex as a visible-light photoredox catalyst for the synthesis of 3-trifluoromethylated and 3-difluoroacetylated coumarins
Release Time:2019-03-13 Hits:
Indexed by: Journal Article
Date of Publication: 2018-12-20
Journal: TETRAHEDRON
Included Journals: Scopus、SCIE
Volume: 74
Issue: 51
Page Number: 7358-7363
ISSN: 0040-4020
Key Words: Photocatalysis; Thermomorphic multicomponent solvent; Catalyst recycle; Trifluoromethylation; Difluroacetylation
Abstract: A recyclable fac-tris(heptadecanyl-2-phenylpyridine) iridium [fac-Ir(hdppy)(3)] photocatalyst was synthesized. The hexane-phase-selective solubility of fac-Ir(hdppy)(3) in a thermomorphic multicomponent solvent (TMS) allowed its easy recycling by automatic liquid/liquid separation at room temperature. The excellent catalytic and recoverable activities of fac-Ir(hdppy)(3) were demonstrated via trifuoromethylation and difluoroacetylation reactions of phenyl 3-phenylpropiolate under visible-light irradiation in a TMS system. (C) 2018 Elsevier Ltd. All rights reserved.