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
GB3600/35A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AGfiledCriticalIG Farbenindustrie AG
Publication of GB451356ApublicationCriticalpatent/GB451356A/en
C07C2603/00—Systems containing at least three condensed rings
C07C2603/02—Ortho- or ortho- and peri-condensed systems
C07C2603/40—Ortho- or ortho- and peri-condensed systems containing four condensed rings
C07C2603/42—Ortho- or ortho- and peri-condensed systems containing four condensed rings containing only six-membered rings
C07C2603/50—Pyrenes; Hydrogenated pyrenes
Abstract
Aminopyrenesulphonic acids are obtained by heating 3-nitropyrene with bisulphite solution, preferably under increased pressure. Reduction and sulphonation occur simultaneously and a mixture of sulphonic acids is obtained, one of which is probably 3-aminopyrene-4-sulphonic acid. An example of the process is given.
GB3600/35A1934-02-031935-02-04Manufacture of aminopyrene-sulphonic acids
ExpiredGB451356A
(en)