| US 7,456,322 B2 | ||
| Process for preparing 1,3-dibromoacetone, 1-3-dichloroacetone and epichlorohydrin | ||
| Clark S. Davis, Oakley, Calif. (US) | ||
| Assigned to Dow Global Technologies Inc., Midland, Mich. (US) | ||
| Appl. No. 10/593,397 PCT Filed May 17, 2005, PCT No. PCT/US2005/017193 § 371(c)(1), (2), (4) Date Oct. 04, 2006, PCT Pub. No. WO2005/115954, PCT Pub. Date Dec. 08, 2005. |
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| Prior Publication US 2008/0249324 A1, Oct. 09, 2008 | ||
| Int. Cl. C07C 45/00 (2006.01); C07D 301/02 (2006.01) | ||
| U.S. Cl. 568—388 [568/393; 568/411; 549/518] | 39 Claims |
| 1. A process for preparing 1,3-dibromoacetone which comprises:
(a) reacting acetone with bromine to make a mixture of brominated acetone derivatives and byproduct hydrogen bromide;
(b) equilibrating the mixture of brominated acetone derivatives to produce 1,3-dibromoacetone as the major product;
(c) crystallizing the 1,3-dibromoacetone in the mixture of brominated acetone derivatives mother liquor; and
(d) isolating the 1,3-dibromoacetone from the mixture of brominated acetone derivatives.
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