Method for accelerating oxime production
First Claim
1. A method for preparing oximes, comprising:
- reacting an aldehyde or ketone with hydroxylamine or a salt thereof in the presence of a catalytic amount of an organotin(IV) compound selected from the group consisting of monoalkyltin(IV), dialkyltin(IV) and aryltin(IV) compounds.
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Abstract
A method for preparing oximes where an aldehyde or ketone is reacted with hydroxylamine or its salt in the presence of a catalytic amount of an organotin(IV) compound such as monoalkyltin(IV), dialkyltin(IV) and aryltin(IV). The organotin(IV) compound is represented by the formula I:
(R.sup.1).sub.n SnX.sub.m-n (I)
where R1 is independently selected from alkyl of 1 to 18 carbons or aryl, X is halogen, oxygen, hydroxyl, OR1, R2 CO2 --, R2 O2 C--(Z)y --CO2 -- or R2 CO2 (CH2)y S--, R2 is alkyl of 1 to 18 carbons or aryl, Z is selected from CH2 or CH═CH, where y is 0 to 6, n is 1 or 2 and m is 4 except that when X is oxygen, n is 2 and m is 3. Exemplary of the organotin(IV) compounds are butyltin tris(2-ethylhexanoate), dibutyltin diacetate and diphenyltin dichloride.
6 Citations
9 Claims
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1. A method for preparing oximes, comprising:
reacting an aldehyde or ketone with hydroxylamine or a salt thereof in the presence of a catalytic amount of an organotin(IV) compound selected from the group consisting of monoalkyltin(IV), dialkyltin(IV) and aryltin(IV) compounds. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9)
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7. The method of claim i wherein the ketone is acetophenone or 2'"'"'-hydroxyacetophenone.
Specification