Synthesis and reactions of heterocyclic dithiocarbamates.
作者:KAZUMICHI MIZUYAMA、YOSHINORI TOMINAGA、YOSHIRO MATSUDA、GORO KOBAYASHI
DOI:10.1248/cpb.27.2879
日期:——
(Alkylthio) thiocarbonylimino-1-methyl-1, 2-dihydropyridine derivatives (3a-e) were prepared by the reaction of 2-amino-1-methylpyridinium iodide (1a-c or d) with carbon disulfide in the presence of sodium hydride and subsequent methylation with dimethyl sulfate in good yields. Similarly, 1-methyl-4-(methylthio) thiocarbonyl-1, 4-dihydropyridine (3i), 1-methyl-2-(methylthio) thiocarbonyl-1, 2-dihydrothiazole (3g), and 1-methyl-2-(methylthio) thiocarbonyl-1, 2-dihydrobenzothiazole (3h) were synthesized by the reaction of the corresponding 2-imino- and 4-imino-N-methyl heterocyclic compounds with carbon disulfide. The reaction of 3a-e with dimethyl acetylenedicarboxylate afforded the 2- or 4-[1, 2-bis (methoxycarbonyl)-2-thioxoethylidene]-1, 2- or 1, 4-dihydropyridine derivatives (8a-d). The reaction of 3i with dimethyl acetylenedicarboxylate (2 mol) gave cyclobuta [b] azocine (9). The reaction of 3h with dimethyl acetylenedicarboxylate afforded 2, 3-dihydrobenzothiazole-2-spiro-2'-(2H-pyrrole) (10). 2-[N-bis (methylthio) methylene] amino-N-methylpyridinium and benzothiazolium iodide (11b, c), which were prepared by the methylation of 3a and h with methyl iodide, reacted with nucleophiles to yield the corresponding products substituted on one or two methylthio groups.
(在氢化钠存在下,2-氨基-1-甲基吡啶碘化物(1a-c 或 d)与二硫化碳反应,然后用硫酸二甲酯进行甲基化,制备了(烷硫基)硫代羰基亚氨基-1-甲基-1, 2-二氢吡啶衍生物(3a-e),产率良好。同样,通过相应的 2-亚氨基和 4-亚氨基-N-甲基杂环化合物与二硫化碳的反应,合成了 1-甲基-4-(甲硫基)硫代羰基-1,4-二氢吡啶(3i)、1-甲基-2-(甲硫基)硫代羰基-1,2-二氢噻唑(3g)和 1-甲基-2-(甲硫基)硫代羰基-1,2-二氢苯并噻唑(3h)。3a-e 与乙炔二甲酸二甲酯反应,可得到 2-或 4-[1,2-双(甲氧羰基)-2-硫酮亚乙基]-1,2-或 1,4-二氢吡啶衍生物(8a-d)。3i 与乙炔二甲酸二甲酯(2 摩尔)反应生成环丁[b]氮杂吖啶(9)。3h 与乙酰二羧酸二甲酯反应得到 2,3-二氢苯并噻唑-2-螺-2'-(2H-吡咯)(10)。由 3a 和 h 与碘甲烷甲基化制备的 2-[N-双(甲硫基)亚甲基]氨基-N-甲基吡啶鎓和苯并噻唑鎓碘化物(11b、c)与亲核剂发生反应,得到被一个或两个甲硫基取代的相应产物。