The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 1981
Filed:
Nov. 19, 1979
Applicant:
Inventors:
Daniel Michelet, Tassin la Demi Lune, FR;
Michel Rakoutz, Oullins, FR;
Assignee:
Philagro, Lyons, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07B / ;
U.S. Cl.
CPC ...
26034622 ;
Abstract
Process for the preparation of 2,3-dihydro-2,2-dimethyl-7-hydroxybenzofurane, a carbofuran intermediate, from methallylpyrocatechol comprises heating the methallylpyrocatechol in the presence of water and optionally also in the presence of an inert organic solvent having a boiling point above 70.degree. C., the volume ratio of solvent to water being less than 3, the weight ratio of water to ortho-methallylpyrocatechol being between 0.3 and 5, and at a temperature of preferably 170.degree.-230.degree. C.