JPS5795996A - Preparation of 1-substituted oxycarbonyl-2- benzimidazolylmethylphosphonic acid monoester - Google Patents

Preparation of 1-substituted oxycarbonyl-2- benzimidazolylmethylphosphonic acid monoester

Info

Publication number
JPS5795996A
JPS5795996A JP17211780A JP17211780A JPS5795996A JP S5795996 A JPS5795996 A JP S5795996A JP 17211780 A JP17211780 A JP 17211780A JP 17211780 A JP17211780 A JP 17211780A JP S5795996 A JPS5795996 A JP S5795996A
Authority
JP
Japan
Prior art keywords
benzimidazolylmethylphosphonic
acid monoester
alkyl
carbon dioxide
formula
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
JP17211780A
Other languages
Japanese (ja)
Inventor
Yutaka Akasaki
Noriko Iizuka
Masaru Fukuyama
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.)
Sagami Chemical Research Institute
Original Assignee
Sagami Chemical Research Institute
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 Sagami Chemical Research Institute filed Critical Sagami Chemical Research Institute
Priority to JP17211780A priority Critical patent/JPS5795996A/en
Publication of JPS5795996A publication Critical patent/JPS5795996A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the titled compound useful as an alkoxycarbonylating agent advantageously, by reacting a 2-benzimidazolylmethylphosphonic acid monoester with carbon dioxide and an alcohol in the presence of a tertiary amine and phosphorus oxychloride.
CONSTITUTION: A 2-benzimidazolymethylphosphonic acid monoester (e.g., 2- benzimidazolylmethylphosphonic monoethyl, ester etc.) shown by the formula I(R1 and R2 are H or alkyl; R3 is alkyl) is reacted with carbon dioxide and an alcohol shown by the formula ROH (R is alkyl or aryl) in the presence of a tertiary amine (e.g., triethylamine, pyridine, etc.) and phorphorus oxychloride, preferably at room temperature, to give a compound shown by the formula II.
EFFECT: The titled compound is obtained from carbon dioxide directly in high yield without using a toxic raw material.
COPYRIGHT: (C)1982,JPO&Japio
JP17211780A 1980-12-08 1980-12-08 Preparation of 1-substituted oxycarbonyl-2- benzimidazolylmethylphosphonic acid monoester Pending JPS5795996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17211780A JPS5795996A (en) 1980-12-08 1980-12-08 Preparation of 1-substituted oxycarbonyl-2- benzimidazolylmethylphosphonic acid monoester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17211780A JPS5795996A (en) 1980-12-08 1980-12-08 Preparation of 1-substituted oxycarbonyl-2- benzimidazolylmethylphosphonic acid monoester

Publications (1)

Publication Number Publication Date
JPS5795996A true JPS5795996A (en) 1982-06-15

Family

ID=15935863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17211780A Pending JPS5795996A (en) 1980-12-08 1980-12-08 Preparation of 1-substituted oxycarbonyl-2- benzimidazolylmethylphosphonic acid monoester

Country Status (1)

Country Link
JP (1) JPS5795996A (en)

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