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Paper | Regular issue | Vol 36, No. 6, 1993, pp.1315-1321
Published online, 1st January, 1970
DOI: 10.3987/COM-92-6304
Synthesis of 2,3,5,6,7,8-Hexahydro-3-amino-2-thioxo[1]benzothieno[2,3-d]pyrimidin-4(1H)-one and Derivatives of the New Heterocyclic System 7,8,9,10-Tetrahydro-3H,11H-[1]benzothieno[2’,3’:4,5]pyrimido[2,1-b][1,3,4]thiadiazin-11-one

Andrea Santagati,* Maria Santagati, and Maria Modica

*Istituto di Chimica Farmaceutica e Tosshicologica, Università di Catania, Viale A. Doria 6, I-95125 Catania, Italy


A versatile compound, 2,3,5,6,7,8-hexahydro-3-amino-2-thioxo[1]benzothieno[2,3-d]pyrimidin-4(1H)-one (4), was synthesized from ethyl 4,5,6,7-tetrahydro-2-isothiocyanato-1-benzothiophene-3-carboxylate (1). Derivatives of a heterocyclic linear system having the 1,3,4-thiadiazine ring were obtained from the key intermediate (4).