GB611716A - Improvements in or relating to sulphonamides and preparation thereof - Google Patents

Improvements in or relating to sulphonamides and preparation thereof

Info

Publication number
GB611716A
GB611716A GB5266/45A GB526645A GB611716A GB 611716 A GB611716 A GB 611716A GB 5266/45 A GB5266/45 A GB 5266/45A GB 526645 A GB526645 A GB 526645A GB 611716 A GB611716 A GB 611716A
Authority
GB
United Kingdom
Prior art keywords
added
aminodiphenyl
sulphonamide
give
chlorosulphonic acid
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
GB5266/45A
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.)
GEN PRINTING INK CORP
Original Assignee
GEN PRINTING INK CORP
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 GEN PRINTING INK CORP filed Critical GEN PRINTING INK CORP
Publication of GB611716A publication Critical patent/GB611716A/en
Expired legal-status Critical Current

Links

Abstract

Sulphonamides are prepared by reacting a substituted aniline as herein defined, free from sulphonic groups and unsubstituted in the amino group, with chlorosulphonic acid and reacting the mono-sulphonyl chloride so produced with ammonia. The expression "substituted anilines" includes not only such compounds as the nitroanilines and the amino di-aryls, but also condensed cyclic compounds such as naphthylamine. In examples: (1) 2-aminodiphenyl is added to chlorosulphonic acid at 25-70 DEG C., heated to 90 DEG C., cooled and added to concentrated ammonia to give 2-aminodiphenyl-41-sulphonamide; (2) 4-aminodiphenyl is added to chlorosulphonic acid and the product reacted with concentrated ammonia to give 4-aminodiphenyl-41-sulphonamide; (3) m-nitroaniline is added to chlorosulphonic acid and the product reacted with concentrated ammonia to give m-nitroaniline-sulphonamide; and (4) a -naphthylamine is added to chlorosulphonic acid and the product reacted with concentrated ammonia to give a -naphthylamine-sulphonamide.
GB5266/45A 1944-03-11 1945-03-02 Improvements in or relating to sulphonamides and preparation thereof Expired GB611716A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US611716XA 1944-03-11 1944-03-11

Publications (1)

Publication Number Publication Date
GB611716A true GB611716A (en) 1948-11-03

Family

ID=22034102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5266/45A Expired GB611716A (en) 1944-03-11 1945-03-02 Improvements in or relating to sulphonamides and preparation thereof

Country Status (1)

Country Link
GB (1) GB611716A (en)

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