GB578564A - Manufacture of p-aminobenzene sulphonic acid amides - Google Patents

Manufacture of p-aminobenzene sulphonic acid amides

Info

Publication number
GB578564A
GB578564A GB6551/44A GB655144A GB578564A GB 578564 A GB578564 A GB 578564A GB 6551/44 A GB6551/44 A GB 6551/44A GB 655144 A GB655144 A GB 655144A GB 578564 A GB578564 A GB 578564A
Authority
GB
United Kingdom
Prior art keywords
acid
amide
sulphonamide
treated
chloride
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
GB6551/44A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
JR Geigy AG
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 by JR Geigy AG filed Critical JR Geigy AG
Publication of GB578564A publication Critical patent/GB578564A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C311/00Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
    • C07C311/30Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups
    • C07C311/45Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups at least one of the singly-bound nitrogen atoms being part of any of the groups, X being a hetero atom, Y being any atom, e.g. N-acylaminosulfonamides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

p-Aminobenzene sulphonic acid amides are produced by the condensation of a p-nitro-, or a p-acylamino-benzene sulphonic acid halide with a salt of an aliphatic, araliphatic, aromatic hydroaromatic or heterocyclic carboxylic acid amide followed by reduction or hydrolysis as necessary to form the primary amino group. In examples: (1) Powdered sodium amide is added to a xylene solution of 3 : 4-dimethylbenzamide, and the reactants then treated with p-nitrobenzenesulphonic acid chloride. The 4 - nitrobenzene - N - (31 : 41 - dimethylbenzoyl) sulphonamide is reduced by catalytic reduction with Raney nickel to the corresponding p-amino compound. (2) b b -dimethylacrylic acid amide is converted into its sodium salt with sodium amide and treated with p-nitrobenzenesulphonic acid chloride as in example (1) to form 4-nitrobenzene-N-(b b -dimethylacroyl)-sulphonamide, which is then reduced with iron powder and acetic acid. (3) b b -dimethylacrylic acid amide is converted into its sodium salt as in example (1) and treated with acetylsulphonilic acid chloride to form 4-(N-acetylamino)-N1-b b -dimethylacroyl-sulphonamide which is then saponified. (4) 3 : 4 - dimethyl - benzamide is converted into its sodium salt as in example (1) and then treated with N-carbethoxysulphanilic acid chloride to form 4-(N-carbethoxyaminobenzene)-N1-(31 : 41-dimethylbenzoyl) sulphonamide, which is then saponified with dilute soda lye on the water bath. A sample has been filed under Sect. 2 (5) of the Acts of 4-aminobenzene-N1-picolyl sulphonic acid amide prepared by adding sodium amide to a solution of picolinic acid amide in xylene followed by a xylene solution of p-nitrobenzene sulpho-chloride, and heating the reaction mixture under reflux. The nitro group is then reduced according to the method of Bechamp with iron powder and acetic acid.
GB6551/44A 1943-04-09 1944-04-07 Manufacture of p-aminobenzene sulphonic acid amides Expired GB578564A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH578564X 1943-04-09

Publications (1)

Publication Number Publication Date
GB578564A true GB578564A (en) 1946-07-03

Family

ID=4521353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6551/44A Expired GB578564A (en) 1943-04-09 1944-04-07 Manufacture of p-aminobenzene sulphonic acid amides

Country Status (1)

Country Link
GB (1) GB578564A (en)

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