Method of making 3,5-dichloro-p-toluoyl chloride
US6201152A · kind A · utility
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16Claims
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Key dates
| Filing date | Nov 5, 1999 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Nov 5, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/60
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a method of making 3,5-dichloro-p-toluoyl chloride. A mixture is prepared of methyl-3,5-dichloro-4-methylbenzoate, about 1 to about 1.4 equivalents of an .alpha.,.alpha.,.alpha.-trichloromethylbenzene, and about 0.01 to about 0.2 equivalents of a catalyst selected from the group consisting of ammonium septamolybdate, ammonium dimolybdate, and mixtures thereof. The mixture is heated to a temperature of about 150 to about 180.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.