A facile synthesis of structurally novel 1-aryl-2-arylamino-4-alkyl/phenyl-5-aroyl-1H-imidazoles from amidinothioureas
โ Scribed by Jitendra C. Kaila; Arshi B. Baraiya; Kamala K. Vasu; V. Sudarsanam
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- French
- Weight
- 172 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
โฆ Synopsis
We report here a convenient and efficient two-step synthesis of 1-aryl-2-arylamino-4-alkyl/phenyl-5aroyl-1H-imidazoles from easily available amidinothioureas. Guanylation of amidinothioureas 1 using mercury(II) chloride as a thiophile yielded amidinoguanidines 2, which reacted with various phenacyl bromides under mild conditions to afford the corresponding diversely functionalized imidazoles 3 in moderate to good yields.
๐ SIMILAR VOLUMES
## Abstract 1โ(Aralkyl/aryl)โ3โ(alkyyaralkyl)โ5โaroylโ1,2,3,4โtetrahydropyrimidines (**2aโc**) have been synthesized by dethiomethylation of 5โaroylโ6โmethylthioโ1,2,3,4โtetrahydropyrimidines (**1aโc**). An alternative oneโpot synthetic strategy has been developed for the title compounds **2aโt** b
By reaction with an excess of trifluoroacetic anhydride, title compounds 4 were synthesized from C-trifluoroacetylated hydrazones 1 which are readily obtainable by trifluoroacetylation of arylaldehyde dimethylhydrazones. Oxadiazine derivatives have attracted much attention of organic chemists from i