反应详情

Thionyl chloride (36.5 ml) was added dropwise to N-(1-hydroxy-2-methylpropan-2-yl)-5-bromo-2-methoxybenzamide (36.34 g). The resulting solution was stirred for 15 minutes and mixed with diethyl ether. The diethyl ether was decanted off and the resulting residue dissolved in 20% NaOH solution. The aqueous solution was extracted with diethyl ether. The extract was washed with brine, dried (MgSO4) and evaporated to give 2-(5-bromo-2-methoxyphenyl)-4,4-dimethyl-4,5-dihydrooxazole (32.02 g).

1. customThe diethyl ether was decanted off
2. dissolutionthe resulting residue dissolved in 20% NaOH solution
3. extractionThe aqueous solution was extracted with diethyl ether
4. washThe extract was washed with brine
5. dry with materialdried (MgSO4)
6. customevaporated