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- W2012256102 abstract "Abstract Reaction of bromocyrhetrene (η5-C5H4Br)Re(CO)3 with lithium tetramethylpiperidide (LiTMP; 1.0 equiv, −78 °C) and then ClPR2 (R = a, Ph; b, Cy) gives (η5-1,2-C5H3BrPR2)Re(CO)3 (5a, 48%; 5b, 80%). Analogous reactions with 2.0 equiv of LiTMP and ClPR2 give the 1-bromo-2,5-diphosphidocyclopentadienyl complexes [η5-1,2,5-C5H2Br(PR2)2]Re(CO)3 (6a, 60%; 6b, 80%). These rhenium containing or cyrhetrenylphosphines are combined with Pd(OAc)2 (2:1 mol ratio) to give catalysts for Suzuki couplings of phenylboronic acid and p-bromotoluene or p-bromoacetophenone (1 mol%; Cs2CO3, toluene, 100 °C). The catalyst with 5b exhibits much higher activities than the others, with conversions of 92–64% after 20 min. The crystal structures of 5b and 6a,b are determined." @default.
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- W2012256102 date "2014-07-10" @default.
- W2012256102 modified "2023-09-27" @default.
- W2012256102 title "ChemInform Abstract: Syntheses, Structures, and Reactions of Cyrhetrenylphosphines; Applications in Palladium Catalyzed Suzuki Cross-Coupling Reactions." @default.
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- W2012256102 doi "https://doi.org/10.1002/chin.201430100" @default.
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