PROCESSES FOR PREPARATION OF ORGANIC COMPOUNDS

WIPO Patent Application WO/2004/031196

A1

The invention provides a process for the preparation of organic compounds which comprises the dehydration step of distilling away water from a polar organic solvent solution containing an organic compound and water to thereby lower the water concentration of the solution to a prescribed level or below, characterized by comprising the step of distilling away water together with the polar organic solvent while adding a polar organic solvent to the solution or the dehydration step of conducting two or more times the operation of adding a polar organic solvent to the solution and then distilling away water together with the polar organic solvent; and a process for the preparation of organic compounds by which an objective organic compound can be efficiently isolated in a high isolation yield from a polar organic solvent solution containing the organic compound, water, and, in certain cases, a compound which generates, on coming into contact with water or the like, a substance accelerating the decomposition of the organic compound.

TAKASE MITSURU (JP)
SAGAE TAKAHIRO (JP)
YAZAKI HIROYUKI (JP)
MORI SHIGEO (JP)
ASANUMA DAISUKE (JP)

PCT/JP2003/012662

April 15, 2004

October 02, 2003

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NIPPON SODA CO (JP)
SUNTORY LTD (JP)
TAKASE MITSURU (JP)
SAGAE TAKAHIRO (JP)
YAZAKI HIROYUKI (JP)
MORI SHIGEO (JP)
ASANUMA DAISUKE (JP)

C07D499/04; C07D499/88; (IPC1-7): C07D499/04; C07B63/00; B01D9/02

WO1992003444A1

1992-03-05

JPH05301882A

1993-11-16

None
See also references of EP 1548017A4

Shamoto, Ichio (Section 206 New Ohtemachi Bldg., 2-1, Ohtemachi 2-chom, Chiyoda-ku Tokyo, JP)

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