N,N-dimethyl-4-nitrobenzamide synthesis
- Product Name:N,N-dimethyl-4-nitrobenzamide
- CAS Number:7291-01-2
- Molecular formula:C9H10N2O3
- Molecular Weight:194.19
Yield:7291-01-2 99%
Reaction Conditions:
with ethylene dichloride hydrochloride;benzotriazol-1-ol;N-ethyl-N,N-diisopropylamine in N,N-dimethyl-formamide at 20; for 12 h;
Steps:
1.1
Step 1: N, N-dimethyl-4-nitro benzamideTo a solution of 4-nitro-benzoic acid (20 g, 0.1196 mol) in DMF (300 mL) N, N- dimethylamine hydrochloride (11.7 g, 0.1436 mol), HOBt (20.9 g, 0.1554 mol),EDC-HCl (34.3 g, 0.1794 mol) and DIPEA (30.91 g, 0.2392 mol) were added. The reaction mixture was stirred at room temperature for 12 h. The reaction mixture was diluted with water and extracted with ethyl acetate (3 x 500 mL). The organic layer was washed with water, brine and dried over sodium sulfate. The solvent was evaporated under reduced pressure to afford the title compound [23.0 g, 99%]; LC-MS (ESI): Calculated mass: 194.1; Observed mass: 195.1 [M+H]+ (RT: 1.70 min).
References:
WO2012/58671,2012,A1 Location in patent:Page/Page column 74-75
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