Claims
- 1. Process for the preparation of an ethylenic ketone of the formula: ##STR18## wherein R represents alkyl of 1 through 6 carbon atoms or alkenyl of 2 through 6 carbon atoms, which comprises treating a chlorinated .beta.-ketoester of the formula: ##STR19## wherein R is as defined above and R.sub.1 represents alkyl of 1 through 4 carbon atoms, with the system lithium chloride/inorganic acid/tertiary amine in a basic polar aproptic solvent, at a temperature between 80.degree. and 160.degree. C., and isolating the said ethylenic ketone of formula (VI).
- 2. A process according to claim 1 in which the basic polar aprotic solvent is selected from the group consisting of N-methylpyrrolidone, dimethylformamide, dimethylacetamide, tetramethylurea and hexamethylphosphotriamide.
Priority Claims (1)
Number |
Date |
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Kind |
81 23684 |
Dec 1981 |
FRX |
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Parent Case Info
This is a division of application Ser. No. 450,267 filed Dec. 16, 1982.
Foreign Referenced Citations (1)
Number |
Date |
Country |
169639 |
Dec 1981 |
JPX |
Non-Patent Literature Citations (3)
Entry |
Kosicki et al., Chem. Abst., vol. 62, #5184b (1985). |
Wornhoff et al., Organic Syntheses, Col. vol. IV, pp. 162-166 (1963). |
Krapcho et al., J. Org. Chem., vol. 43, pp. 138-147 (1978). |
Divisions (1)
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Number |
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Parent |
450267 |
Dec 1982 |
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