[CH2:1]([Si:3]([CH2:7][CH3:8])([CH2:5][CH3:6])Cl)[CH3:2].[O:9]1[CH2:13][CH2:12][NH:11][C:10]1=[O:14]>>[CH2:1]([Si:3]([CH2:7][CH3:8])([CH2:5][CH3:6])[N:11]1[CH2:12][CH2:13][O:9][C:10]1=[O:14])[CH3:2]Following the previous example, but replacing the trimethylchlorosilane with triethylchlorosilane (63.3 g; 0.42 mol) and operating under similar conditions, the result is the compound of the above heading; a colourless fluid liquid, obtained with a similar yield. 2-oxazolidinone, calculated: 42.82%; found: 42.70%. Distils at 100° C between 2 and 4 mm.
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