No abstract

Ethyl (Z)‐2‐[2,2‐bis(ethoxycarbonyl)vinyl]amino‐3‐dimethylaminopropenoate (5), a new reagent in the synthesis of heteroaryl substituted β‐amino‐ α,β‐ ‐dehydro—amino acid derivatives and some fused hetero‐cyclic systems, was prepared from ethyl N‐2,2‐bis(ethoxycarbonyl)vinylglycinate (3) and N,N‐dimethyl‐formamide dimethyl acetal (4). The substitution of the dimethylamino group in the compound 5 with heterocyclic amines produced ethyl 2‐[2,2‐bis(ethoxycarbonyl)vinyl]amino‐3‐heteroarylaminopropenoates 7a‐f and, in some instances, [2,2‐bis‐(ethoxycarbonyl)vinyl]aminoazolo‐ or ‐azinopyrimidine derivatives 8g‐k.

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No abstract

The compounds ethyl (E)-