Abstract
2-Alkylmercapto- 4-Chloro-6-phenyl-pyrimidine-5-carbonitrile 4a-c were synthesized and converted into 2-alkylmercapto 4-mercapto-6-phenyl-pyrimidine-5-carbonitriles 7a-c . Compound 7a-b was alkylated with halogenated compounds to afford compounds 8a-g . The produced compounds underwent Thorpe-Ziegler Cyclization to give thienopyrimidines 9a-g . 5-Amino-2-alkylmercapto-4-phenyl-thieno-[2,3-d]pyrimidine-6-carboxamide derivatives 9a-f underwent cyclization reaction using triethyl orthoformate to afford pyrimido-thienopyrimidines 10a-e .
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