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- W1978298593 abstract "Abstract: The Sandmeyer reaction on some selected heterocyclesbearing the 2-amino-3-carbonitrile structural moiety has been in-vestigated in order to prepare the corresponding 2-chloro-3-carbo-nitrile derivatives as synthetic useful intermediates for furtherdevelopment. Key words: Sandmeyer reaction, 2-amino(heterocyclic)-3-carbo-nitriles, 2-aminopyrazoles, 2-aminooxazoles, 2-amino-4 H -pyrans,2-amino-1,4-dihydropyridines, 2-aminopyridines, 2-chloro(hetero-cyclic)-3-carbonitriles In the context of a current project in progress in our labo-ratory for the synthesis of pharmacological active com-pounds, 1 we have recently synthesized some differentlysubstituted 2-chloropyridine-3-carbonitrile intermediates I by Sandmeyer reaction 2 of easily available 2-aminopyri-dine derivatives II (Scheme 1). Eventually, intermediates I could also be prepared by reaction with sodium nitrite inhydrochloric acid, 3 or by reaction with phosphorus oxy-chloride from 2-pyridones III . 4 Scheme 1 2-Chloro(heterocyclic)-3-carbonitriles are well known,useful synthetic intermediates in heterocyclic chemistrythat have been transformed into complex and more ad-vanced heterocyclic compounds." @default.
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- W1978298593 date "2010-07-07" @default.
- W1978298593 modified "2023-09-27" @default.
- W1978298593 title "The Sandmeyer Reaction on Some Selected Heterocyclic Ring Systems: Synthesis of Useful 2-Chloroheterocyclic-3-carbonitrile Intermediates" @default.
- W1978298593 doi "https://doi.org/10.1055/s-0030-1258149" @default.
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