Title:
MANUFACTURE OF HALOGENOVINYLLGAMMAA BUTYROLACTONE
Document Type and Number:
Japanese Patent JPS5470258
Kind Code:
A
Abstract:
Halogenovinyl- gamma -butyralactones, used as intermediates in the preparation of insecticidally active cyclopropanecarboxylic acid esters, and of the formula in which Hal represents F, Cl or Br, X represents H, F, Cl or Br and R1 and R2, which may be identical or different, each represents C1-4-alkyl or R1 and R2, together with the adjacent C atom, form a cycloaliphatic ring with up to 7 C atoms, are produced by basic de-acetylation of the novel corresponding alpha -acetyl compounds. Syntheses are given for preparing the acetyl compounds, including novel intermediates of the formulas
Inventors:
RAINHARUTO RANTSUSHIYU
Application Number:
JP13012778A
Publication Date:
June 05, 1979
Filing Date:
October 24, 1978
Export Citation:
Assignee:
BAYER AG
International Classes:
C07C29/62; C07C31/34; C07C31/36; C07C35/48; C07C67/46; C07C69/72; C07D307/32; C07D307/33; C07D307/94; C07C69/743; (IPC1-7): C07D307/22