Synthetic Route of 39070-14-9, A common heterocyclic compound, 39070-14-9, name is (1-Methyl-2-nitro-1H-imidazol-5-yl)methanol, molecular formula is C5H7N3O3, its 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 suspension of bis(2-chloroethyl)ammonium chloride (1.43 g, 8.01 mmol) in dichloromethane (DCM) phosphorus trichloride (0.32 ml, 3.64 mmol) was added at rt followed by addition of TEA (3.05 ml, 21.84 mmol). The reaction mixture was stirred at rt for 30 minutes and then N-methyl 2-nitroimidazolyl methanol (0.474 g, 3.31 mmol) in DME was added. After stirring for 0.5 hour, the reaction mixture was cooled to -2O0C and tert- butyl hydroperoxide (0.7 ml, 3.82 mmol, 5.5 M in Decane) was added. The reaction mixture was warmed to rt over a period of one hour, and poured into 10% aqueous HCl. The organic layer was separated and the aqueous layer was extracted with DCM. The combined organic solution was dried with MgSO4 and concentrated to yield a residue which was purified by flash chromatography with 6-12% methanol in DCM yielding 6.
The synthetic route of 39070-14-9 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; THRESHOLD PHARMACEUTICALS, INC.; WO2007/2931; (2007); A2;,
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