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Expired
Application number
GB26937/27A
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IG Farbenindustrie AG
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IG Farbenindustrie AG
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Publication date
Application filed by IG Farbenindustrie AGfiledCriticalIG Farbenindustrie AG
Publication of GB278761ApublicationCriticalpatent/GB278761A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
278,761. I. G. Farbenindustrie Akt.- Ges. Oct. 11, 1926, [Convention date]. 3- (or 5-) Chloro-, 3: 5-dichloro-1-nitro (and amino)-2-: 4-dimethylbenzenes are obtained by chlorinating 1-nitro-2: 4-dimethylbenzene and reducing the products. In examples, (1) 1-nitro- 2 : 4-dimethylbenzene is dissolved in carbon tetrachloride, sublimed ferric chloride is added and chlorine is introduced with cooling. On distilling the carbon tetrachloride, a crystalline and an oily portion remain, the former yielding on reduction 3-chloro-, and the latter 5-chloro-1-amino- 2 : 4-dimethylbenzene; (2) if the introduction of chlorine is continued 3 : 5-dichloro-1-nitro-2 : 4- dimethylbenzene is obtained which is then reduced.
GB26937/27A1926-10-111927-10-11Manufacture of chlorine-substitution products of 1-amino-2:4-dimethylbenzene
ExpiredGB278761A
(en)