Water → HCID 68089459, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of tert-butyl 5-nitro-2,3-dihydrobenzo[b][1,4]dioxin-6-ylcarbamate (2.3 g, 7.8 mmol) in DMF (25 mL) was stirred at 0° C. Sodium hydride (373 mg, 9.3 mmol) was added slowly. Dimethyl sulfate (1.017 g, 9.3 mmol) was added dropwise and the mixture was stirred at 0° C. for 0.5 h. To the reaction mixture was slowly added water (40 mL). The mixture was extracted with toluene (40 mL), the organic phase was washed with water (40 mL) and dried, and the solvent removed. The product was purified by silica gel column (5% v/v EtOAc in PE) to give tert-butyl methyl(5-nitro-2,3-dihydrobenzo[b][1,4]dioxin-6-yl)carbamate (2.2 g, 92% yield). ESI MS: m/z 311 [M+H]+,

Provenance & Evidence