反应详情

A round bottom flask was charged with methyl trans-4-(3-amino-4-chlorophenylsulfonamido)cyclohexamecarboxylate (Intermediate 10, 333 mg, 0.922 mmol) and acetaldehyde (52.1 μl, 0.922 mmol) followed by sodium triacetoxyborohydride (293 mg, 1.383 mmol) in DCE (9217 μl) and the reaction was stirred overnight. The reaction was diluted with DCM/sat'd NaHCO3, and the organic layer was separated and dried over MgSO4, then filtered and chromatographed on a Biotage 25S column to yield the title compound (224 mg, 0.598 mmol, 64.8% yield). Rf (50% EtOAc/heptane): sm=0.43; product=0.58. MS MH+=375.2

1. customthe organic layer was separated
2. dry with materialdried over MgSO4
3. filtrationfiltered
4. customchromatographed on a Biotage 25S column