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US 8,802,885 B2Granted
Process for preparing 3-methylsulfonylpropionitrile
AssigneeOlatec Industries LLC
InventorsJoseph P. St. Laurent, Gerald S. Jones, David M. Bresse
Life of this patent
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Abstract
The present invention relates to processes for preparing 3-methylsulfonylpropionitrile. The processes provide a good yield and a good purity of the final product and provide a controllable reaction. The present invention also relates to a crystalline form of 3-methylsulfonylpropionitrile having X-ray diffraction peaks at 13.9±0.1, 19.2±0.1, 20.0±0.1, 22.5±0.1, 23.2±0.1, 25.7±0.1, 28.1±0.1, 29.9±0.1, and 30.6±0.1 degrees 2θ, and wherein the most intense peak is the peak at 13.9±0.1 degrees 2θ.
Claims10
A method for preparing 3-methylsulfonylpropionitrile, comprising:
- (a) reacting 3-bromopropionitrile and sodium methylsulfinate in an organic solvent to obtain crude 3-methylsulfonylpropionitrile in a solid form, and
- (b) removing a byproduct sodium bromide.
Dependencies are inferred from the claim text.