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:
Apr. 15, 2008
Filed:
Oct. 02, 2003
Mitsuru Takase, Niigata, JP;
Takahiro Sagae, Kanagawa, JP;
Hiroyuki Yazaki, Niigata, JP;
Shigeo Mori, Niigata, JP;
Daisuke Asanuma, Niigata, JP;
Mitsuru Takase, Niigata, JP;
Takahiro Sagae, Kanagawa, JP;
Hiroyuki Yazaki, Niigata, JP;
Shigeo Mori, Niigata, JP;
Daisuke Asanuma, Niigata, JP;
Asubio Pharma Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a method for preparing an organic compound, which comprises a dehydration step of distilling off water from a polar organic solvent solution containing the organic compound and water to bring the concentration of water below a given level, wherein the dehydration step comprises distilling off water together with the polar organic solvent while adding a polar organic solvent to the solution, or comprises repeating several cycles of adding a polar organic solvent to the solution and then distilling off water together with the polar organic solvent. The present invention further provides the preparation of an organic compound, which enables efficient isolation of the target product in high isolated yield from a polar organic solvent solution containing the organic compound, water and, if necessary, a compound which produces, upon coming into contact with water or the like, a substance accelerating the decomposition of the organic compound.