反应详情

(a)(i) A solution of aminoacetaldehyde diethylacetal (8 g, 0.06 mol) and 1-nitro-2,2-bis-methylthioethylene (10 g, 0.06 mol) in ethanol (100 ml) was refluxed for 20 hours. The solvent was removed in vacuo. The residue was chromatographed on a silica gel column eluted with carbon tetrachloride/chloroform (7:3) and the product was crystallised from propan-2-ol to give 1-nitro-2-methylthio-2-(2,2-diethoxyethylamino)ethylene (8.7 g, 58%) m.p. 73°-73.5°.

1. customThe solvent was removed in vacuo
2. customThe residue was chromatographed on a silica gel column
3. washeluted with carbon tetrachloride/chloroform (7:3)
4. customthe product was crystallised from propan-2-ol