One-pot three-component condensation of aromatic ketones (1-tetralones, acetophenones, indane-1,3-dione), substituted aromatic aldehydes and thiourea in the presence of N-methylpyridinium tosylate under solvent free conditions at 100–110 °C for 2–4 h afforded tetrahydrobenzo[ h]quinazoline-2-thiones, pyridimidine-2-thiones and indeno-pyrimidine-2-thiones in excellent yields. All synthesised thiones were screened for their antimicrobial activities.
在 N-
甲基吡啶鎓
对甲苯磺酸盐存在下,在无溶剂条件下于 100-110 °C、2-4 h 内以单锅三组分缩合
芳香酮(1-四氢酮、
苯乙酮、
茚-1,3-二酮)、取代芳香醛和
硫脲,得到四氢苯并[h]
喹唑啉-2-
硫酮、
吡啶-2-
硫酮和
茚并
嘧啶-2-
硫酮,产率极高。对所有合成的亚
硫酰进行了抗菌活性筛选。