1-chlorobutane-2,3-dione synthesis
- Product Name:1-chlorobutane-2,3-dione
- CAS Number:5559-62-6
- Molecular formula:C4H5ClO2
- Molecular Weight:120.53
431-03-8
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5559-62-6
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Yield:5559-62-6 60%
Reaction Conditions:
with sulfuryl dichloride in benzene at 60;
Steps:
1.1a
(1a) Sulfuryl chloride (97% purity) (18.7 mL, 226 mmol) was added dropwise over 1 hour to a stirred solution of 2,3-butanedione (97% purity) (20 g, 225 mmol) in benzene (80 mL) at 60° C. and the mixture left to stir at this temperature overnight. The benzene was removed in vacuo and the residue was purified by distillation to give 1-chloro-2,3-butanedione as a yellow liquid, b.p.=95 to 105° C. (≈10 mmHg), (16.2 g, 60%).
References:
US2006/41146,2006,A1 Location in patent:Page/Page column 10
14366-10-0
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5559-62-6
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