
2-(Chloromethyl)-5,6,7,8-tetrahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidin-4(3Н)-ones reacted with acetylenedicarboxylate ester, methyl propiolate or acetylacetylene, forming mixtures of 2-(chloromethyl)-5,6,7,10-tetrahydropyrimido[5',4':4,5]thieno[3,2-d]azocin-4(3Н)-ones and 2'-chloromethyl-6'-methylidene-2,3-dihydro-1Н-spiro[pyrido[4,5']thieno[2,3-d]pyrimidin]-4'(3'H)-ones in various ratios. Analogous products were also obtained in the reaction of 2-(methoxymethyl) derivative with methyl propiolate, while using 2-[(morpholin-4-yl)-methyl] derivative in a similar reaction led to the formation of a more complex product mixture.
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This work received financial support from the Russian Foundation for Basic Research (grant 14-03-00311а).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, 2015, 51(1), 17–25
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Voskressensky, L.G., Kovaleva, S.A., Borisova, T.N. et al. Synthesis of 2-(chloro(methoxy, morpholino)methyl)-hexahydropyrimidothieno[3,2-c]azocines and tetrahydrospiro[pyrido[4,5']thieno[2,3-d]pyrimidines]. Chem Heterocycl Comp 51, 17–25 (2015). https://doi.org/10.1007/s10593-015-1652-2
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DOI: https://doi.org/10.1007/s10593-015-1652-2