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:
Jun. 03, 1986
Filed:
Nov. 21, 1984
Applicant:
Inventors:
Akio Miyake, Osaka, JP;
Masayoshi Yamaoka, Osaka, JP;
Assignee:
Takeda Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560-1 ; 260408 ; 560105 ; 560121 ; 560123 ; 560124 ; 560238 ;
Abstract
An 1-Iodoalkyl acylate, which is useful as the raw material for esterification of cephalosporins, penicillins, etc. is prepared in a high degree of purity and in high yield by (1) allowing a carboxylic acid iodide to react with an aldehyde, or (2) allowing a carboxylic acid chloride to react with a salt of hydriodic acid and then allowing the resulting product to react with an aldehyde, or (3) by simultaneously allowing a carboxylic acid chloride, a salt of hydriodic acid and an aldehyde to react with one another.