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. 137049-00-4, name is 1-Methyl-1H-imidazole-4-sulfonyl chloride, A new synthetic method of this compound is introduced below., Application In Synthesis of 1-Methyl-1H-imidazole-4-sulfonyl chloride
The production of compound No. 26 proceeds according to the sequence of reaction steps shown in the following schemes: The first sub-step shown above was performed at 20 C. during 2 hours with a molar excess of CH2N2 (about 2 molar equivalents) in dry ether, then in a second sub-step (shown below) performed at 5 C. HCl gas was bubbled into the reaction mixture for 15 minutes, and the desired intermediate was obtained in 71% yield. For the conversion from 3 to 4, the first sub-step shown above was performed at 20 C. during 1 hour with a molar excess of thio-carbonyldiimidazole (about 2 molar equivalents) in THF, then in a second sub-step performed at 20 C. for 12 hours a 25% aqueous NH3 solution was added, and the desired intermediate was obtained in 72% yield. The conversion from 4 to 5 was performed during 6 hours with 1 molar equivalent NaHCO3 at reflux in methanol, and the desired intermediate was obtained in 92% yield. The conversion from 5 to 6 was performed during 3 hours at 20 C., and the desired intermediate was obtained in 90% yield. The conversion from 6 to the final compound was performed during 6 hours at 20 C. in 1,2-dichloroethane (DCE) in the presence of a molar excess of triethylamine (1.2 molar equivalents).
The synthetic route of 137049-00-4 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; NV reMYND; US2010/197703; (2010); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem