FIELD: chemistry.
SUBSTANCE: invention refers to the method for preparation of 3-(alkylthio)propanal of general formula I 
whereat R is hydrogen or C1-C3alkyl by the catalytical interreaction of glycerine with compound of general formula II R-SH whereat R is hydrogen or C1-C3alkyl.
EFFECT: simplification of the product obtaining process due to stages number reducing.
17 cl, 2 ex
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