Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 934-22-5, name is 6-Aminobenzimidazole, A new synthetic method of this compound is introduced below., Recommanded Product: 934-22-5
To the solution of 1H-benzimidazol-5-amine 121 (0.68 g, 5.11 mmol) in acetic acid (20 mL), the Compound 120a (1.06 g, 5.62 mmol) was added and stirred at room temperature for 20 minutes. TMSCN (1 mL) was added dropwise to the reaction mixture and continuously stirred for 2 hours. After reaction completing, the reaction mixture was concentrated under reduced pressure to yield a viscous liquid. The viscous liquid was diluted with ethyl acetate (10 mL) and water. The diluted solution was adjusted to the pH 6-7 with ammonia at an ice-bath. The neutralized solution was extracted with ethyl acetate (20 mL×4), dried over sodium sulfate, filtered and concentrated under reduced pressure to yield a viscous dark-yellow solid. The solid was dissolved in ethyl acetate (15 mL) and brine (15 mL). The mixture was stirred at room temperature for 2 minutes to form the pale-yellow precipitates. The pale-yellow precipitates was filtered and washed with water. The filtrate was dried over sodium sulfate and concentrated under reduced pressure to obtain the pale-yellow solid. Those pale-yellow solids were combined as the desired product 122a at a yield of 96%
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; National Health Research Institutes; Academia Sinica; Chen, Chih-Hao; Shih, Chuan; Chen, Chiung-Tong; Wang, Hwei-Jiung; Huang, Kai-Fa; US2020/71312; (2020); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem