反应详情

A mixture of rel-(1S,2R,5S)-2-azido-5-(tert-butyl(diphenyl)silyl)oxy-1-methyl-cyclopentanol (2.28 g, 5.76 mmol, enantiomeric mixture) and 10% palladium on carbon (61 mg) in ethanol (29 mL) is hydrogenated (60 psi) at room temperature for 16 h. The reaction is filtered through a pad of diatomaceous earth and rinsed with EtOH (50 mL). The filtrate is concentrated in vacuo, dissolved in dichloromethane (10 mL), and concentrated in vacuo. The crude product is purified on silica gel (120 g, 1-6% (2 M ammonia in methanol/dichloromethane) to afford the title compound as an opaque yellow oil (419 mg, 20%). LC-ES/MS m/z 353 (M+1).

1. customat room temperature
2. customfor 16 h
3. filtrationThe reaction is filtered through a pad of diatomaceous earth
4. washrinsed with EtOH (50 mL)
5. concentrationThe filtrate is concentrated in vacuo
6. dissolutiondissolved in dichloromethane (10 mL)
7. concentrationconcentrated in vacuo
8. customThe crude product is purified on silica gel (120 g, 1-6% (2 M ammonia in methanol/dichloromethane)