Journal of Heterocyclic Chemistry p. 1295 - 1300 (1998)
Update date:2022-08-05
Topics:
Dave, Chaitanya G.
Shah, Rina D.
Some new 7,9-disubstituted 7H-1,2,3,4-tetrazolo[1,5-c]pyrrolo[3,2- e]pyrimidines 5 have been synthesized either by diazotization of 4-hydrazino- 5,7-disubstituted-7H-pyrrolo[2,3-d]pyrimidines 4 obtained by hydrazinolysis of 4-chloro-5,7-disubstituted-7H-pyrrolo[2,3-d]pyrimidines 3 or via a substitution reaction between 3 and sodium azide. 5,7-Disubstituted-7H- pyrrolo[2,3-d]pyrimidin-4(3H)-ones 2 were obtained by cyclocondensation of 2- amino-3-cyano-1,4-disubstituted pyrroles 1 with formic acid which on chlorination using phosphorus oxychloride afforded 3. A novel route for the synthesis of 4-amino-5,7-disubstituted-7H-pyrrolo[2,3-d]pyrimidines 6 by the reductive ring cleavage of 5 has been reported.
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Doi:10.1016/S0040-4039(98)02383-1
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(1999)Doi:10.1016/S0957-4166(99)00287-6
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(1999)Doi:10.1246/bcsj.42.258
(1969)Doi:10.1080/00397919908085779
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