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. 29, 2005
Filed:
Nov. 13, 2001
Shinya Nagano, Himeji, JP;
Hiroshi Shimojitosho, Osaka, JP;
Shinya Nagano, Himeji, JP;
Hiroshi Shimojitosho, Osaka, JP;
Daicel Chemical Industries, Ltd., Sakai, JP;
Abstract
The production process of the present invention comprises a step of allowing a carboxylic acid derivative represented by the formula (1):wherein ring Z is a monocyclic or polycyclic non-aromatic or aromatic ring, and Ris a halogen atom or a group represented by the formula (2):—OR  (2)wherein R is a hydrogen atom or a hydrocarbon group, to react with an organometallic compound represented by the formula (3):R-M  (3)wherein Ris a hydrocarbon group, and M is a metallic atom which may have a ligand, or the formula (4):-MgY  (4)wherein Y is a halogen atom,and a carboxylic acid halide represented by the formula (5):wherein Ris a hydrocarbon group or a heterocyclic group, and X is a halogen atom,to yield the tertiary alcohol ester represented by the formula (6):wherein Z, Rand Rhave the same meanings as defined above. According to the present invention, a tertiary alcohol compound having a tertiary carbon combined with a ring group can be easily and efficiently produced from carboxylic acid derivative which is comparatively cheap and readily available.