Process for preparing 4-amino-5-hexenoic acid

Details Process for preparing 4-amino-5-hexenoic acid Process for preparing 4-amino-5-hexenoic acid

C - Chemistry, Metallurgy

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D

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C07D 207/26 (2006.01) C07D 207/267 (2006.01) C07D 207/28 (2006.01)

Patent

CA 1208651

PROCESS FOR PREPARING 4-AMINO-5-HEXENOIC ACID ABSTRACT OF THE DISCLOSURE 4-Amino-5-hexenoic acid is prepared by: (a) reacting 5-oxo-2-pyrrolidine-acetonitrile with hydrogen and dimethylamine in the presence of a palladium catalyst to form N,N-dimethyl-2-[ 5'-oxo- 2'-pyrrolidine ]ethylamine; (b) oxidizing N,N-dimethyl-2-[5'-oxo-2'-pyrrolidine ]- ethylamine to produce the corresponding N-oxide derivative; (c) pyrolysis of the N-oxide derivative to form 5-vinyl- 2-pyrrolidinone; (d) optionally, separating N,N-dimethyl-2-[5'-oxo-2'- pyrrolidine ] ethylamine by-product from the 5-vinyl- 2-pyrrolidinone product; and (e) hydrolyzing 5-vinyl-2-pyrrolidinone to form 4-amino- 5-hexenoic acid.

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