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- W2092144423 abstract "Normally 3-pentanone reacts with boiling sulfuryl chloride to yield a mixture of dichlorinated compounds. The production of 2,2,4-trichloro-3-pentanone (97% selectivity; 88–93% yield) can be promoted by the catalytic combination of a soluble strong acid and its salt with an organic base. Using chlorosulfonic acid or p-toluenesulfonic acid (82 mmol/mol ketone) combined with N,N-dimethyloctylamine or N-formylmorpholine (50 mmol) the trichlorination step was reached after less than 6h at 97°C. Each additive alone gave a poor result. The trichlorination can be accomplished in 1h at 60–70°C with chlorine and some excess of dimethylformamide, but the catalytic procedure is advantageous for its practical convenience and for avoiding DMF.HCI as a waste." @default.
- W2092144423 created "2016-06-24" @default.
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- W2092144423 date "2010-09-01" @default.
- W2092144423 modified "2023-09-26" @default.
- W2092144423 title "COOPERATIVE CATALYSIS of ENOLIZATION BY PROTON DONORS AND ACCEPTORS. SELECTIVE α,α,α′-TRICHLORINATION OF 3-PENTANONE AND RELATED KETONES WITH “ACTIVATED” SULFURYL CHLORIDE" @default.
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- W2092144423 doi "https://doi.org/10.1002/bscb.19941030104" @default.
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