Process for the production of 4-(trialkylammonium)-acetoacetarylides
US4552983A · kind A · utility
1Cited by
4References
20Claims
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Key dates
| Filing date | Sep 20, 1984 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Sep 20, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B44/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Process for the production of 4-(trialkylammonium)-acetoacetarylides having the formula: ##STR1## wherein: R is H, a lower alkyl, --OCH.sub.3, --OC.sub.2 H.sub.5, --Cl, --Br, --NO.sub.2, --NHCOCH.sub.3 or an anilated heterocyclic ring; n is 1 to 3; R.sup.1, R.sup.2 and R.sup.3 each is an alkyl having 1 to 18 C atoms; and X is Cl or Br. Such arylide is prepared by reacting a corresponding trialkylamine with a corresponding 4-haloacetoacetarylide at a low temperature in the presence of an organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.