Ube Industries, Inc.

Soda Aromatic Co., Ltd.

Soda Aromaic Co., Ltd.

Hiroshi Yoshida

Keigo Nishihira

Teruhiko Inoue

Noboru Kakeya

Masanori Kashiwagi

Shuji Tanaka

Kozo Fujii

Mamoru Nakai

Hiroyuki Sawada

Masayoshi Yamashita

Naoyuki Yokota

Kazuhiro Morita

Yoshitaka Onduka

Kensaku Fuse

Kiyoshi Ohmori

Sumio Umemura

Yoshihiro Kusuki

Hiroshi Makino

Shigeki Nagai

Sadao Niida

Yoshiaki Kuroki

Asumaru Nakamura

Kiyosi Oomori

4-fluoro-3-oxocarboxylic esters and process for producing the same

6-(1-fluoroalkyl)-4-pyrimidones and processes for producing the same

.omega.-Hydroxy-(.omega.-3)-ketonitrile of the formula NC(CH.sub.2).sub.n --CO--(CH.sub.2).sub.3 OH wherein n is an integer of 7 to 11.

.omega.-hydroxy-(.omega.-3)-ketonitrile

There are disclosed (i) .omega.-hydroxy-(.omega.-3)-ketonitrile represented by the formula ( I ):

.omega.-hydroxy-(.omega.-3)-ketonitrile and method for preparing

Disclosed are .alpha.-(.omega.-Cyanoalkanoyl)-.gamma.-butyrolactone represented by the formula: ##STR1## wherein n represents an integer of 7 to 11, and a method for producing the same, which comprises reacting .omega.-cyano fatty acid ester represented by the formula:

.alpha.-(.omega.-cyanoalkanoyl)-.gamma.-butyrolactone and method for

A method of purifying 2-methyl-4-amino-5-aminomethylpyrimidine by heating the carbonate thereof. Preferably the heating is carried out in water or a specified solvent.

Method of purifying 2-methyl-4-amino-5-aminomethylpyrimidine

.alpha.-(.omega.-cyanoalkanoyl-.gamma.-butyrolactone and method for

Disclosed are a 2-methyl-4-amino-5-aminomethylpyrimidine carbonate which is a novel compound, a process for preparing the same which comprises subjecting 2-methyl-4-amino-5-aminomethylpyrimidine to reaction with carbon dioxide in a lower aliphatic alcohol, and a simple method of purification of 2-methyl-4-amino-5-aminomethylpyrimidine by using the carbonate thereof.

2-methyl-4-amino-5-aminomethylpyrimidine carbonate, process for

There is disclosed a process for preparing 5-mercapto-1,2,3-thiadiazole salts comprising reacting a hydrazone compound represented by the formula:

Process for preparing 5-mercapto-1,2,3-thiadiazole salts

There is disclosed a process for the preparation of a 2-alkyl-4-amino-5-aminomethylpyrimidine, which comprises subjecting a 2-alkyl-4-amino-5-formylpyrimidine to catalytic reaction with hydrogen and ammonia in the presence of a reduction catalyst. According to the process of this invention, the desired product can be obtained in much higher yield as compared with the processes known to the art.

Process for the preparation of a 2-alkyl-4-amino-5-aminomethylpyrimidine

Disclosed is a process for preparing 2-alkyl-4-amino-5-aminomethylpyrimidine comprising (i) a first step of reacting 2-alkyl-4-amino-5-formylpyrimidine with ammonia in an inert solvent in the presence of at least one compound selected from heteropolyacids, isopolyacids, oxyacids and salts thereof containing molybdenum or tungsten, and (ii) a second step of reacting the reaction product in the first step catalytically with ammonia and hydrogen in an inert solvent in the presence of a reducing catalyst together with or without a hydroxide of an alkali metal or alkaline earth metal.

Process for preparing 2-alkyl-4-amino-5-aminomethylpyrimidine

A process for preparing a 4-amino-5-dialkoxymethylpyrimidine derivative of the formula: ##STR1## which comprises reacting a propanenitrile derivative represented by the formula (I) or the novel compound represented by formula (II): ##STR2## with an amidine of the formula: ##STR3## wherein R.sup.1 to R.sup.6 are as defined in the specification. Also disclosed is a process for making the novel compounds of formula (II).

Process for preparing 4-amino-5-dialkoxy-methylpyrimidine derivatives

There are disclosed a 4-alkoxy-1,3-dioxane-5-carbonitrile which is a novel compound represented by the formula ##STR1## wherein R represents a lower-alkyl group, and which is useful as an intermediate for the synthesis of Vitamin B.sub.1, and a process for preparing the novel compound by subjecting a 3-alkoxy-2-propenenitrile to reaction with a formaldehyde in the presence of an acid catalyst.

4-Alkoxy-1,3-dioxane-5-carbonitriles and process for preparing the same

A polyimide semipermeable membrane is prepared by the process comprising the steps of:

Process for preparing aromatic polyimide semipermeable membranes

Process for preparing monoalkyl ethers of dihydric phenols using a catalyst comprising Al, B and P.

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Ube, Japan

Hiroshi Yoshida