KIM, SH RA, YH LEE, YY KIM, K KIM, JH 2024-01-21T21:30:59Z 2024-01-21T21:30:59Z 2022-01-10 1994-11 0022-152X https://pubs.kist.re.kr/handle/201004/145472 The reactions of 1-alkylamino-1-alkylthio-3-phenylpropene-3-thiones 3 with thiophosgene and phosgene in toluene, followed by treatment of the reaction mixture with triethylamine gave 3-alkyl-2,3-dihydro-4-oxo-6-phenyl-2-thioxo- 4, 3-alkyl-2,3-dihydro-2,4-dioxo-6-phenyl-4H-1,3-thiazines 5, respectively in good to excellent yields. Similarly treatment of compounds 3 with N-arylimidoyl dichloride in benzene at room temperature gave 3-alkyl-2-arylimino-2,3-dihydro-4-oxo-6-phenyl-4H-1,3-thiazines 6 in excellent yields. The reactions of compounds 3 with oxalyl chloride in toluene gave also 5 in good yields. English HETERO CORPORATION A CONVENIENT SYNTHESIS OF 3-ALKYL-2,3-DIHYDRO-2,4-DIOXO-6-PHENYL-4H-1,3-THIAZINES, 3-ALKYL-2,3-DIHYDRO-4-OXO-6-PHENYL-2-THIOXO-4H-1,3-THIAZINES, AND 3-ALKYL-2-ARYLIMINO-2,3-DIHYDRO-4-OXO-6-PHENYL-4H-1,3-THIAZINES Article 10.1002/jhet.5570310611 1 JOURNAL OF HETEROCYCLIC CHEMISTRY, v.31, no.6, pp.1361 - 1368 JOURNAL OF HETEROCYCLIC CHEMISTRY 31 6 1361 1368 scie scopus A1994QA31600011 2-s2.0-0028576016 Chemistry, Organic Chemistry Article 1-alkylamino-1-alkylthio-3-phenylpropene-3-thiones N-atylimidoyldichloride