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- W1967339940 abstract "A systematic study on the use of liposoluble PEG5000Bu3N+Br- (1a) as the catalyst in a series of anion-promoted reactions carried out under both liquid−liquid (LL) and solid−liquid (SL) phase-transfer catalysis (PTC) conditions is reported. A comparison of the catalytic efficiency of 1a and that of popular soluble nonsupported and/or insoluble resin-supported onium salts 1b−i is also included. Classical nucleophilic substitution reactions, i.e., Br−I exchange [reaction (1)] and SN2 displacement with a CN- ion [reaction (2)], C-, O-, and N-alkylation reactions [reactions (3)−(9)], formation and reactions of dichlorocarbenes with alkenes [reaction (10)], and sodium borohydride reductions [reaction (11)] were the standard transformations examined. The results show that 1a behaves as an efficient easily recyclable phase-transfer (PT) agent under both LL- and SL-PTC conditions, with its catalytic activity being generally superior to that of insoluble resin-supported PT agents 1b,d and favorably comparable to that of popular soluble nonsupported onium salts 1c,e−i." @default.
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- W1967339940 date "2002-09-10" @default.
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- W1967339940 title "Use of a Quaternary Ammonium Salt Supported on a Liposoluble Poly(ethylene glycol) Matrix for Laboratory and Industrial Synthetic Applications of Phase-Transfer Catalysis" @default.
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- W1967339940 doi "https://doi.org/10.1021/ie020188q" @default.
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