Process for the preparation of cyclopropane carboxylic acid este

Details Process for the preparation of cyclopropane carboxylic acid este Process for the preparation of cyclopropane carboxylic acid este

1984-08-27

1985-11-05

Shippen, Michael L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

560124, C07C 67317

Patent

active

045512817

ABSTRACT:
3-(2'-chloro-3',3',3'-trifluoropropenyl)-2,2-dimethylcyclopropane-1-carboxy lic acid esters are prepared by dehydrohalogenation of the corresponding 3-(2',2'-dichloro-3',3',3-trifluoropropyl) compounds by reaction with an alkali metal carbonate in a polar aprotic solvent. The products are intermediates in the preparation of pyrethroid insecticides or are themselves insecticides.

REFERENCES:
patent: 4166064 (1979-08-01), Kondo
patent: 4183948 (1980-01-01), Huff
patent: 4243677 (1981-01-01), Engel
patent: 4252820 (1981-02-01), Lantzsch
patent: 4258202 (1981-03-01), Piccardi
Fieser, "Reagents for Organic Synthesis," pp. 606-607 (1967); vol. 3, p. 183 (1972); vol. 5, p. 395 (1975); and vol. 7, p. 200 (1979).
House, "Modern Synthetic Reactions," 2nd Ed., pp. 473-474 (1972).
Survey of Organic Synthesis (Buehler & Pearson) (1970), pp. 75-78.
Synthetic Reagents, vol. I, Pizey (1974), pp. 18-21.

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