Application of 137049-00-4,Some common heterocyclic compound, 137049-00-4, name is 1-Methyl-1H-imidazole-4-sulfonyl chloride, molecular formula is C4H5ClN2O2S, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
To a solution of l-N-Boc-3-cyanoazetidine (5.0 g, 27.5 mmol) in 1,4- dioxane (50 mL) was added 4 N HCl (50 mL) and stirred for 2 h. The reaction was concentrated under vacuum. The residue was dissolved in CH2Cl2 (60 mL) and DIPEA (10.6 mL, 60.4 mmol) and added l-methylimidazole-4-sulfonyl chloride (4.94 g, 27.5 mmol) and stirred at room temperature for 20 h. The reaction mixture was washed with 2 N NaOH (50 mL), dried over MgSO4 and concentrated under vacuum to afford 8 as a white crystalline solid (4.97 g, 80%); ; Eta-nmr (300 MHz, CDCl3) delta 7.06 (s, IH), 7.56 (s, IH), 4.27-4.19 (m, 4H), 3.82 (s, 3H), 3.43-3.31 (m, IH); LC-MS (214) 99%, 0.93 min, m/z 227 ‘.1 (M+H).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1-Methyl-1H-imidazole-4-sulfonyl chloride, its application will become more common.
Reference:
Patent; VANDERBILT UNIVERSITY; LINDSLEY, Craig, W.; CONN, P., Jeffrey; WILLIAMS, Richard; JONES, Carrie, K.; SHEFFLER, Douglas, J.; WO2010/114907; (2010); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem