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The 5‐ and/or 6‐alkyl substituted derivatives of 2‐aminopyridine‐3‐carbonitrile were synthesized via dienamine intermediates (3) produced by the addition‐elimination reaction of various enamines to methoxymethylene malondinitrile. The reaction can be carried out without the isolation of the dienamine intermediates.
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KURIHARA et al. (1977) studied this question.
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