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Title:
PREPARATION OF 2,4-ALKYLIDENEDIOXYBUTANENITRILE
Document Type and Number:
Japanese Patent JPS5929684
Kind Code:
A
Abstract:

PURPOSE: To obtain the titled compound useful as a precursor for amino sugar in a short process, by reacting a 2,3-alkylidene-dioxybutanal with hydroxylamine hydrochloride in the presence of a base, dehydrating it.

CONSTITUTION: A 2,3-alkylidinedioxybutanal shown by the formula II (R is H, alkyl, etc.; R1 is lower alkyl) is reacted with hydroxylamine hydrochloride in the presence of a base such as K2CO3, etc. at room temperature W100°C to give an oxime shown by the formula III, which is dehydrated with a dehydrating agent such as thionyl chloride, etc. in a solvent such as dichloromethane, etc. at 0°CW the boiling point of the solvent, to give a compound shown by the formula I .

EFFECT: The reaction in the presence of the base improves preferably the reaction efficiency. A starting substance which is easily obtained from tartaric acid is used.


Inventors:
Hiyama, Tamejirou
Kobayashi, Kazuhiro
Application Number:
JP1982000139197
Publication Date:
February 16, 1984
Filing Date:
August 12, 1982
Export Citation:
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Assignee:
SAGAMI CHEM RES CENTER
International Classes:
C07D317/32; C07D317/72; C07H9/04; C07H15/04; (IPC1-7): C07D317/32; C07D317/72; C07H9/04; C07H15/04