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:
Sep. 27, 2005
Filed:
Jul. 08, 2002
Kousei Ikai, Amagasaki, JP;
Masafumi Mikami, Amagasaki, JP;
Yoshiro Furukawa, Amagasaki, JP;
Takeshi Urano, Amagasaki, JP;
Seiji Ohtaka, Amagasaki, JP;
Kousei Ikai, Amagasaki, JP;
Masafumi Mikami, Amagasaki, JP;
Yoshiro Furukawa, Amagasaki, JP;
Takeshi Urano, Amagasaki, JP;
Seiji Ohtaka, Amagasaki, JP;
Daiso Co., Ltd., Osaka, JP;
Abstract
An object of the present invention is to provide a process wherein 1,2,4-butanetriol can be obtained safely, easily and inexpensively without causing problems concerning wastewater. A malic diester, 3-hydroxy-γ-butyrolactone or 3,4-dihydroxybutanoate represented by the following formulae (I), or a mixture thereof is reduced with sodium borohydride in an organic solvent to give 1,2,4-butanetriol represented by the following formula (II). When an optically active substance is used as the above-mentioned starting compound, substantially no recemization occurs during the reduction, and optically active 1,2,4-butanetriol is obtained.