JPS57203051A - Preparation of malononitrile - Google Patents

Preparation of malononitrile

Info

Publication number
JPS57203051A
JPS57203051A JP8747081A JP8747081A JPS57203051A JP S57203051 A JPS57203051 A JP S57203051A JP 8747081 A JP8747081 A JP 8747081A JP 8747081 A JP8747081 A JP 8747081A JP S57203051 A JPS57203051 A JP S57203051A
Authority
JP
Japan
Prior art keywords
alkyl
cyanoacetaldehyde
acetal
simplified
raw material
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
JP8747081A
Other languages
Japanese (ja)
Inventor
Chikanobu Matsutame
Shinichiro Uchiumi
Mitsuo Takahashi
Hideki Asada
Masaru Kurahashi
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.)
Ube Corp
Original Assignee
Ube Industries Ltd
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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP8747081A priority Critical patent/JPS57203051A/en
Publication of JPS57203051A publication Critical patent/JPS57203051A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prepare the titled compound useful as a raw material of vitamin B1, in high yield and selectivity, economically in an industrial scale, by treating cyanoacetaldehyde acetal in an aqueous solution of an acid, and reacting with hydroxylamine-o-sulfonic acid.
CONSTITUTION: The cyanoacetaldehyde acetal of formula (R is H, alkyl, etc.; R' is alkyl, etc.; the H in the alkyl groups R and R' may be substituted with halogen, etc.) is treated in an acidic aqueous solution (e.g. sulfuric acid solution) at 20W100°C, and made to react with hydroxyalmine-o-sulfonic acid at 0W 100°C to obtain the objective compound.
EFFECT: Since the reaction process is simplified, the safety of the raw material is high and the corrosion of the apparauts to inhibited compared with the conventional process, the treatment of the waste water and waste liquid can be simplified, and the necessity of using a reaction apparatus made of a particular material can be eliminated.
COPYRIGHT: (C)1982,JPO&Japio
JP8747081A 1981-06-09 1981-06-09 Preparation of malononitrile Pending JPS57203051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8747081A JPS57203051A (en) 1981-06-09 1981-06-09 Preparation of malononitrile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8747081A JPS57203051A (en) 1981-06-09 1981-06-09 Preparation of malononitrile

Publications (1)

Publication Number Publication Date
JPS57203051A true JPS57203051A (en) 1982-12-13

Family

ID=13915787

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8747081A Pending JPS57203051A (en) 1981-06-09 1981-06-09 Preparation of malononitrile

Country Status (1)

Country Link
JP (1) JPS57203051A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6353126B1 (en) 1999-06-30 2002-03-05 Creanova Inc. Process for the production of malononitrile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6353126B1 (en) 1999-06-30 2002-03-05 Creanova Inc. Process for the production of malononitrile

Similar Documents

Publication Publication Date Title
JPS57203051A (en) Preparation of malononitrile
JPS55139375A (en) Production of hydroxyflavan
JPS542396A (en) Purification of urokinase
JPS5792511A (en) Solvent extraction of phosphoric acid
JPS56118067A (en) Preparation of copper quinolinate
DE3362720D1 (en) Process for the purification of sulfuric acid as a by-product of the synthesis of boron trifluoride
JPS5352274A (en) Treating method for aqueous solution containing urea, ammonia and carbondioxide
JPS5498704A (en) Preparation of alcohols
JPS54132535A (en) Purification of m-dinitrobenzene
JPS5764646A (en) Preparation of 2,6-dichloro-4-nitro-phenol
JPS56131540A (en) Preparation of p-nitroaniline
JPS5236622A (en) Process for preparation of bromoacetic acid
JPS5248262A (en) Method of treatment of waste water from phosphoric acid wet production plant
JPS55337A (en) Anti-fungus agent
JPS5390650A (en) Waste water treatment
JPS5212146A (en) Process for preparation of p- acetylaminobenzene-sufonylchloride
JPS5513214A (en) Vitamin e sulfate and its preparation
JPS5641815A (en) Purifying method for wet process phosphoric acid solution
JPS57185238A (en) Preparation of p-nitrobenzoic acid
JPS55164669A (en) Preparation of cysteine
JPS5262956A (en) Process for treating waste water containing sulfuric acid ion
JPS56104852A (en) Purification of aqueous solution of acrylamide
JPS5795977A (en) Preparation of piperidinophenylpropionic acid
JPS527930A (en) Process for purification of hydroquinone
JPS56158748A (en) Preparation of secretin