反应 #2525070
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openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US07091231B2
反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: An ice-cold mixture of 4-methylmorpholine N-oxide (NMO) (1.683 g, 14.4 mmol), 1-3 (1.229 g, 9.59 mmol) and 4 Å molecular sieves (5.5 g) in dichloromethane (20 mL) was treated with tetrapropylammonium perruthenate (TPAP) (179 mg, 0.51 mmol). The mixture was stirred at 0° C. for 5 min. and then was allowed to warm to room temperature. After 1 h, the mixture was filtered through a pad of silica gel (dichloromethane) and the dichloromethane was evaporated. The crude product was combined with the crude product from another batch (starting with 4.986 g, 38.9 mmol of 1-3) and the combined product was purified by distillation under reduced pressure followed by flash chromatography on silica gel (15% ether/pentane) to give 1-4 (2.649 g, 43%). to warm to room temperature After 1 h the mixture was filtered through a pad of silica gel (dichloromethane) the dichloromethane was evaporated the combined product was purified by distillation under reduced pressure
来源 ID: ord-421cfd5fe897437b9d9739632c65ce27