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- W2952314390 abstract "2-amino-3-cyano-4 H -phenyl-benzo[ f ]chromene ( I ) was reacted with formamide, acetic anhydride, and ethyl cyanoacetate to produce compounds ( II-IV ), respectively. Compound IV reacted with HCONH 2 , POCl 3 and P 2 S 5 to produce corresponding pyrimidobenzochromene ( V ), chloropyridobenzochromene ( VI ) and mercaptopyridobenzochromene ( VII ). Compound VII reacted with α-halocompounds to produce corresponding S-alkylated derivatives ( VIIIa to VIIIc ), and compound ( VI ) reacted with different amines to produce corresponding alkyl amino-, or aryl aminopyridobenzochromene ( IXa-IXc ) but in using hydrazine hydrate, pyrazolopyridobenzochromene ( X ) was obtained." @default.
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- W2952314390 date "1991-01-01" @default.
- W2952314390 modified "2023-09-23" @default.
- W2952314390 title "Synthesis of some new heterocyclic compounds containing chromene" @default.
- W2952314390 doi "https://doi.org/10.1135/cccc19910916" @default.
- W2952314390 hasPublicationYear "1991" @default.
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