GB792615A - Process for the production of substituted iminodibenzyls - Google Patents

Process for the production of substituted iminodibenzyls

Info

Publication number
GB792615A
GB792615A GB26618/56A GB2661856A GB792615A GB 792615 A GB792615 A GB 792615A GB 26618/56 A GB26618/56 A GB 26618/56A GB 2661856 A GB2661856 A GB 2661856A GB 792615 A GB792615 A GB 792615A
Authority
GB
United Kingdom
Prior art keywords
dimethyl
formate
iminodibenzyls
iminodibenzyl
nitro
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
GB26618/56A
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 GB792615A publication Critical patent/GB792615A/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Dimethyl substituted iminodibenzyls of the general formula: <FORM:0792615/IV (b)/1> are prepared by oxidizing a 2-nitroxylene in the cold with an alkyl formate or alkyl nitrite in the presence of an alkali metal alcoholate, reducing the dinitrodibenzyl so formed to the diamino compound and heating to about 280-320 DEG C. a mineral salt of the said diaminodibenzyl. In examples, o-nitro-p-xylene is reacted with isoamyl formate, or butyl formate, in the presence of sodium or potassium ethylate and in an inert solvent such as cyclohexane at a temperature below 5 DEG C., the 2 : 21-dinitro-4 : 41-dimethyldibenzyl is reduced by hydrogen in the presence of Raney nickel to the diamino compound, and this converted into the diphosphate salt which is then heated to 280-320 DEG C. to form 3 : 7-dimethyl-iminodibenzyl. By oxidizing 4-nitro-1 : 3-dimethyl benzene with amyl nitrite, and heating the mono hydrochloride of the diamine as above, 2 : 8-dimethyl-iminodibenzyl is formed.
GB26618/56A 1955-09-02 1956-08-31 Process for the production of substituted iminodibenzyls Expired GB792615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH792615X 1955-09-02

Publications (1)

Publication Number Publication Date
GB792615A true GB792615A (en) 1958-04-02

Family

ID=4537079

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26618/56A Expired GB792615A (en) 1955-09-02 1956-08-31 Process for the production of substituted iminodibenzyls

Country Status (1)

Country Link
GB (1) GB792615A (en)

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