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- W2025837356 abstract "A number of allenes RR1CCCHR2 2 have been prepared by interaction between acetylenic tosylates R1C≡CCHR2OTs, 1 (R1 = H, alkyl, aryl, H2CC(CH3) or CH3C≡C; R2 = H or t-C4H9) and organocopper(I) compounds “RCu” (formed from Grignard compounds RMgCl or RMgBr with R = alkyl, aryl or 2-thienyl and copper(I) bromide in tetrahydrofuran). If R = t-C4H9 the reaction with catalytic amounts of CuBr also gives good results. Significant amounts of C6H5CHCCH2 or C6H5CDCCH, are formed if C6H5CCCH2OTs is reacted with “CH3Cu” (from CH3MgCl and CuI) at −60° in tetrahydrofuran and the reaction mixture is quenched at low temperatures with methanol or deuteriomethanol. This finding is considered as evidence for the intermediate occurrence of a copper(III) derivative." @default.
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- W2025837356 date "2010-09-02" @default.
- W2025837356 modified "2023-10-07" @default.
- W2025837356 title "A versatile synthesis of allenic hydrocarbons. Evidence for an organocopper(III) intermediate" @default.
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- W2025837356 doi "https://doi.org/10.1002/recl.19750940511" @default.
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