Process for the production of 4-chloroacetoacetyl chloride, 4-chloroacetoacetic acid esters, amides and imides
US9227905B2 · kind B2 · utility
0Cited by
4References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 25, 2012 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Jul 27, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C231/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to process for the continuous production of 4-chloroacetoacetyl chloride, comprising the steps of (a) feeding diketene and chlorine into a thin film reactor and (b) reacting the diketene and chlorine to obtain 4-chloroacetoacetyl chloride. The invention also relates to a process for the production of 4-chloroacetoaceticacid ester, 4-chloroacetoaceticacid amide or 4-chloroacetoaceticacid imide from 4-chloroacetoacetyl chloride obtained according to the inventive process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.