GB1296655A - - Google Patents

Info

Publication number
GB1296655A
GB1296655A GB1296655DA GB1296655A GB 1296655 A GB1296655 A GB 1296655A GB 1296655D A GB1296655D A GB 1296655DA GB 1296655 A GB1296655 A GB 1296655A
Authority
GB
United Kingdom
Prior art keywords
alkyl
salicylazosulphapyridine
hydrolysing
aminopyridine
signifies
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1296655A publication Critical patent/GB1296655A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/32—Preparation of azo dyes from other azo compounds by reacting carboxylic or sulfonic groups, or derivatives thereof, with amines; by reacting keto-groups with amines
    • C09B43/325—Preparation of azo dyes from other azo compounds by reacting carboxylic or sulfonic groups, or derivatives thereof, with amines; by reacting keto-groups with amines by reacting sulfonic acids with amines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)

Abstract

1296655 Process for salicylazosulphapyridine PHARMACIA AB 19 April 1971 [6 March 1970] 23265/71 Heading C2C The invention comprises a process for making therapeutic compound I by reacting compound II with 2 -aminopyridine in the presence of acid binder and hydrolysing the ester so obtained (X is H or signifies COR 1 . where R 1 is C 1 to C 4 alkyl; R is C 1 to C 4 alkyl).
GB1296655D 1970-03-06 1971-04-19 Expired GB1296655A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE298870A SE353537B (en) 1970-03-06 1970-03-06

Publications (1)

Publication Number Publication Date
GB1296655A true GB1296655A (en) 1972-11-15

Family

ID=20261150

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296655D Expired GB1296655A (en) 1970-03-06 1971-04-19

Country Status (6)

Country Link
CH (1) CH520139A (en)
DE (1) DE2110613A1 (en)
FR (1) FR2085679B1 (en)
GB (1) GB1296655A (en)
NL (1) NL7102980A (en)
SE (1) SE353537B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104130186A (en) * 2014-06-30 2014-11-05 江苏瑞克医药科技有限公司 Method for improving salicylazosulfapyridine refining production efficiency
CN105330599A (en) * 2015-11-26 2016-02-17 苏州统华药品有限公司 Method for synthesizing salazosulfapyridine by utilizing 2-aminopyridine as raw material

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE791889A (en) * 1971-11-26 1973-05-24 Pharmacia Ab NEW DERIVATIVES OF PYRIDINE
US4412992A (en) * 1980-07-21 1983-11-01 Biorex Laboratories Limited 2-Hydroxy-5-phenylazobenzoic acid derivatives and method of treating ulcerative colitis therewith

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104130186A (en) * 2014-06-30 2014-11-05 江苏瑞克医药科技有限公司 Method for improving salicylazosulfapyridine refining production efficiency
CN105330599A (en) * 2015-11-26 2016-02-17 苏州统华药品有限公司 Method for synthesizing salazosulfapyridine by utilizing 2-aminopyridine as raw material

Also Published As

Publication number Publication date
NL7102980A (en) 1971-09-08
FR2085679A1 (en) 1971-12-31
FR2085679B1 (en) 1974-11-15
CH520139A (en) 1972-03-15
SE353537B (en) 1973-02-05
DE2110613A1 (en) 1971-09-23

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees