JPS56167655A - Preparation of methylenedicarbanilate - Google Patents

Preparation of methylenedicarbanilate

Info

Publication number
JPS56167655A
JPS56167655A JP7111980A JP7111980A JPS56167655A JP S56167655 A JPS56167655 A JP S56167655A JP 7111980 A JP7111980 A JP 7111980A JP 7111980 A JP7111980 A JP 7111980A JP S56167655 A JPS56167655 A JP S56167655A
Authority
JP
Japan
Prior art keywords
formula
carboxylic acid
compound
carbanilate
hcho
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.)
Pending
Application number
JP7111980A
Other languages
Japanese (ja)
Inventor
Hirosuke Wada
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei 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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP7111980A priority Critical patent/JPS56167655A/en
Publication of JPS56167655A publication Critical patent/JPS56167655A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: To obtain the titled compound which is an intermediate for preparing polyurethane in high conversion and yield, by reacting a carbanilate with HCHO in the presenc of a mineral acid in an aliphatic carboxylic acid and an anhydrate thereof as at least one component of a solvent.
CONSTITUTION: A carbanilate of formula I (R is 1W4C alkyl or phenyl; X, Y and Z are H, halogen, nitro, etc.), e.g. ethyl and methyl carbanilates, is reacted with HCHO in the presence of a mineral acid, e.g. H2SO4 or HCl, to give a compound of formula II or III and a dimer of formula IV or V. In the process, an aliphatic carboxylic acid, e.g. a 1W6C aliphatic saturated carboxylic acid, preferably acetic acid, and an anhydride thereof are used as at least one component of the reaction solvent. The compound of formulas IV and V are isomerized in the presence of an acidic catalyst to the compounds of formulas II and III, and the circulation thereof through the reaction system improves the yield of the product.
COPYRIGHT: (C)1981,JPO&Japio
JP7111980A 1980-05-28 1980-05-28 Preparation of methylenedicarbanilate Pending JPS56167655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7111980A JPS56167655A (en) 1980-05-28 1980-05-28 Preparation of methylenedicarbanilate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7111980A JPS56167655A (en) 1980-05-28 1980-05-28 Preparation of methylenedicarbanilate

Publications (1)

Publication Number Publication Date
JPS56167655A true JPS56167655A (en) 1981-12-23

Family

ID=13451352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7111980A Pending JPS56167655A (en) 1980-05-28 1980-05-28 Preparation of methylenedicarbanilate

Country Status (1)

Country Link
JP (1) JPS56167655A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6094547A (en) * 1983-10-28 1985-05-27 Nec Corp Radio telephony system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5557550A (en) * 1978-10-20 1980-04-28 Atlantic Richfield Co Manufacture of diphenylmethanedicarbamate and polymethylenepolyphenylcarbamate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5557550A (en) * 1978-10-20 1980-04-28 Atlantic Richfield Co Manufacture of diphenylmethanedicarbamate and polymethylenepolyphenylcarbamate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6094547A (en) * 1983-10-28 1985-05-27 Nec Corp Radio telephony system
JPH0446019B2 (en) * 1983-10-28 1992-07-28 Nippon Electric Co

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