GB211245A - Improvements in and relating to the production of urea derivatives - Google Patents

Improvements in and relating to the production of urea derivatives

Info

Publication number
GB211245A
GB211245A GB3209522A GB3209522A GB211245A GB 211245 A GB211245 A GB 211245A GB 3209522 A GB3209522 A GB 3209522A GB 3209522 A GB3209522 A GB 3209522A GB 211245 A GB211245 A GB 211245A
Authority
GB
United Kingdom
Prior art keywords
production
relating
dimethylaniline
benzene
urea derivatives
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
GB3209522A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to GB3209522A priority Critical patent/GB211245A/en
Publication of GB211245A publication Critical patent/GB211245A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/18—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas
    • C07C273/1809—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas with formation of the N-C(O)-N moiety

Abstract

In the production of tetrasubstituted ureas by the interaction of carbonyl chloride with a secondary amine in a solvent, an agent, such as a tertiary amine, is added to fix the hydrochloric acid liberated. According to the example, a mixture of monomethylaniline and dimethylaniline, such as results for example from the methylation of aniline, is dissolved in benzene and carbonyl chloride passed into the heated solution; after the benzene has been distilled off, the excess of dimethylaniline, which formed the acid-fixing agent, is removed by adding dilute hydrochloric acid and the dimethyldiphenylurea filtered off.
GB3209522A 1922-11-23 1922-11-23 Improvements in and relating to the production of urea derivatives Expired GB211245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3209522A GB211245A (en) 1922-11-23 1922-11-23 Improvements in and relating to the production of urea derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3209522A GB211245A (en) 1922-11-23 1922-11-23 Improvements in and relating to the production of urea derivatives

Publications (1)

Publication Number Publication Date
GB211245A true GB211245A (en) 1924-02-21

Family

ID=10333145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3209522A Expired GB211245A (en) 1922-11-23 1922-11-23 Improvements in and relating to the production of urea derivatives

Country Status (1)

Country Link
GB (1) GB211245A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722550A (en) * 1951-10-18 1955-11-01 Goodrich Co B F Preparation of n, n'-substituted ureas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722550A (en) * 1951-10-18 1955-11-01 Goodrich Co B F Preparation of n, n'-substituted ureas

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