反应详情

To a solution of 1 (4.50 g, 19.8 mmol) in THF (100 mL) was added 7 N aqueous HCl (40 mL). The reaction mixture was stirred for 17 h and the reaction was quenched by pouring onto saturated aqueous NaHCO3 (475 mL). The mixture was extracted with ethyl acetate (1×) then CH2Cl2 (3×) and the combined organic extracts dried (MgSO4) and concentrated. The resulting oil was purified by Kugelrohr distillation to give (VII-a) (3.17 g, 87%) as a clear oil; 1H NMR (400 MHz, CDCl3) δ 1.80-1.94 (m, 2H), 1.80-2.10 (m, 2H), 2.30 (m, 1H), 2.45-2.65 (m, 8H), 3.74 (t, J=4.7 Hz, 4H).

1. customthe reaction was quenched
2. additionby pouring onto saturated aqueous NaHCO3 (475 mL)
3. extractionThe mixture was extracted with ethyl acetate (1×)
4. dry with materialCH2Cl2 (3×) and the combined organic extracts dried (MgSO4)
5. concentrationconcentrated
6. distillationThe resulting oil was purified by Kugelrohr distillation
7. customto give (VII-a) (3.17 g, 87%) as a clear oil