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Patent Searching and Data


Title:
METHOD FOR PRODUCING ORTHO-AMINOBENZENESULFONAMIDE COMPOUND
Document Type and Number:
Japanese Patent JP2003286245
Kind Code:
A
Abstract:

To provide a method for producing various kinds of o- aminobenzenesulfonamide compounds in good yield from an easily available raw material.

The method for producing the o-aminobenzenesulfonamide compound represented by general formula (I) comprises the following steps (1) to (4): (1) a step for introducing a protective group to the amino group of a compound represented by general formula (II); (2) a step for halogenating the sulfo group of the compound obtained in the step (1); (3) a step for forming a sulfonamide by using the sulfonyl chloride obtained at the step (2) and a primary amine; and (4) a step for deprotecting the compound obtained at the step (3) to synthesize the compound represented by general formula (I). (In the formulas, R1 is a substituted or unsubstituted alkyl group or aryl group; R2 is a substituent; n is an integer of 0-4; when n is ≥2, two or more R2s are the same or different, and may form a ring by bonding to each other).


Inventors:
MAEDA HIDEKI
YAMAKAWA KAZUYOSHI
Application Number:
JP2002000095678
Publication Date:
October 10, 2003
Filing Date:
March 29, 2002
Export Citation:
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Assignee:
FUJI PHOTO FILM CO LTD
International Classes:
C07D209/48; C07B61/00; C07C303/40; C07C311/39; (IPC1-7): C07C303/40; C07C311/39; C07D209/48
Attorney, Agent or Firm:
Toshizo Iida