Cyclopropanecarboxylic acids and esters

US4258202A · kind A · utility

Assignee

• Montedison S.p.A. · IT

Inventors

• Paolo Piccardi · Milano, IT
• Francesco Corda · Milano, IT
• Franco Gozzo · San Donato Milanese, IT
• Augusto Menconi · Milano, IT

Key dates

• Filing date: Feb 26, 1979
• Grant date: Mar 24, 1981
• Expiry date: Feb 26, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C61/40
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Cyclopropanecarboxylic acids and esters are disclosed, having the formula: ##STR1## wherein A=CF.sub.3 --C.tbd.C--; ##STR2## X=H, F, Cl, Br; Y=Cl, Br; R=H, alkyl C.sub.1 -C.sub.4 Compounds of formula I are intermediates for the preparation of insecticide compounds of the pyrethroid type.