反应详情

To N-(7′-bromo-4-methoxy-3′,4′-dihydro-1′H-spiro[cyclohexane-1,2′-naphthalene]-1′-ylidene)-2-methylpropane-2-sulfinamide (Intermediate 13, 0.610 g, 1.43 mmol) under N2 (g) was added HCl (4 M in 1,4-dioxane, 3.58 mL, 14.3 mmol). The mixture was stirred at r.t. for 45 min and was then concentrated. DCM (approx. 2 mL) was added followed by Et2O. A solid formed and was filtered off and washed with Et2O. The solid was dissolved in DCM. NaHCO3 (sat. aq.) was added and the mixture was poured into a phase separator. The organic phase was collected and concentrated to give the title compound (0.35 g, 76% yield): MS (EI) m/z 321 M+.

1. concentrationwas then concentrated
2. additionDCM (approx. 2 mL) was added
3. customA solid formed
4. filtrationwas filtered off
5. washwashed with Et2O
6. dissolutionThe solid was dissolved in DCM
7. additionNaHCO3 (sat. aq.) was added
8. additionthe mixture was poured into a phase separator
9. customThe organic phase was collected
10. concentrationconcentrated