To economically and industrially obtain the subject compound useful for an intermediate in organic synthesis, alkyd resin, etc., in high yield by reacting a tricyanobutane with an alcohol so as to synthesize the corresponding ester compound and hydrolyzing it in the presence of an acid catalyst.
This objective compound is obtained by reacting 4 to 8 equivalents of an alcohol with 1,2,4-tricyanobutane at 80 to 110°C for 4 to 15 hrs. so as to synthesize the corresponding ester compound and hydrolyzing the resultant ester in the presence of 1 to 50 mol.% of an acid catalyst (e.g. strong acid cation-exchange resin) in terms of exchange capacity based on the aliphatic polyvalent ester at 90 to 110°C for 8 to 30 hrs. Preferably, the ester compound comprises a carboxylic acid-ester compound shown by the formula (R is H or a 1-4C alkyl). The alcohol is pref. a 1-4C aliphatic primary alcohol (e.g. methanol).
IWANE HIROSHI
KITA MICHIJI
HARA SHUJI
SHIRAMINE TOSHIAKI
NIPPON HYDRAZINE KOGYO KK
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