反应详情

A mixture of ethyl 2-oxoacetate (50% solution in toluene; 4.066 g; 20.00 mmol), 2-methylpropane-2-sulfinamide (2.424 g; 20.00 mmol), and 4 angstrom molecular sieves (60 g) in anh. DCM (250 ml) was stirred at rt, under nitrogen, for 65 h. The reaction mixture was then filtered over celite, and the separated solids were washed with AcOEt (3×200 ml). The filtrate was then dried over anh. MgSO4, filtered, and concentrated to dryness under reduced pressure affording ethyl 2-((tert-butylsulfinyl)imino)acetate as a yellow oil.

1. filtrationThe reaction mixture was then filtered over celite
2. washthe separated solids were washed with AcOEt (3×200 ml)
3. dry with materialThe filtrate was then dried over anh. MgSO4
4. filtrationfiltered
5. concentrationconcentrated to dryness under reduced pressure