反应详情

温度

0 °C

In a round-bottomed flask, 2-methyl-propane-2-sulfinic acid 1-oxazol-4-yl-meth-(E)-ylideneamide (548 mg, 2.74 mmol) was dissolved in dichloromethane (9 ml). The reaction mixture was cooled to 0° C. and methylmagnesium bromide (3.0 M in diethyl ether, 1.0 ml, 3.0 mmol) was added dropwise. The reaction mixture was stirred at 0° C. for 1 h then quenched with saturated aqueous NH4Cl and extracted with ethyl acetate (2×). The combined organic layers were washed with water and brine then dried over sodium sulfate, filtered and concentrated to afford 588 mg of 2-methyl-propane-2-sulfinic acid (1-oxazol-4-yl-ethyl)-amide as a light yellow oil.

1. customthen quenched with saturated aqueous NH4Cl
2. extractionextracted with ethyl acetate (2×)
3. washThe combined organic layers were washed with water and brine
4. dry with materialthen dried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated