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- W1973309928 abstract "2-(1 -Substituted-2-amino-4,5-dihydro-4-oxopyrrol-3-yl)-1,3-dimethylbenzimidazolium and -3-methylbenzothiazolium chlorides were prepared by reaction of 2 -(2,3-dihydro-1,3-dimethylbenzimidazol-2-ylidene)- and 2-(3-methylbenzothiazol-2-ylidene)-4-chloro-3-oxobutanenitriles with primary amines. The salts obtained were reduced to 4-(2,3-dihydro-l,3-dimethylbenzimidazol-2-yl)- and 4-(2,3-dihydro-3-methylbenzothiazol-2-yl)-1-substituted-5-aminopyrrol-3(2H)-ones. These pyrrole derivatives were shown to serve as synthetic equivalents of the corresponding 2-aminopyrrole-3-carboxaldehydes. Thus, their treatment with phenylhydrazine yielded 1-substituted 2-amino-4,5-dihydro-4-oxopyrrole-3-carboxaldehyde phenylhydrazones, whereas condensation with malonodinitrile afforded 1-substituted 6-amino-2,3-dihydro-3-oxopyrrolo[2,3-b ]pyridine-5-carbonitriles." @default.
- W1973309928 created "2016-06-24" @default.
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- W1973309928 date "2007-10-30" @default.
- W1973309928 modified "2023-09-24" @default.
- W1973309928 title "Synthesis of Masked 2-Amino-4,5-dihydro-4-oxopyrrole-3-carboxaldehydes." @default.
- W1973309928 cites W2950023156 @default.
- W1973309928 doi "https://doi.org/10.1002/chin.200744105" @default.
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