Demethylation of N methyl pyrrolidone.

Jack

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Does anyone here know if the Von Braun reaction where tertiary amines are dealkylated to cyanamides is applicable to tertiary amides.
ie; could I react N methyl pyrrolidone a tertiary amide with cyanogen bromide and get 2-oxopyrrolidine-1-carbonitrile, the N cyano derivative.

(For making gamma hydroxy butyric acid)
 
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G.Patton

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Hi, I'm not sure cuz there is oxo group, which is strong electron acceptor.
 
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