Dichloromethane → Benzyl-[(1r,3s,4s)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)-silyl]oxy}methyl)cyclopentyl]carbamate

Participants

Reaction Conditions

Reaction Steps

To a solution of (1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]oxy}methyl)cyclopentanamine (0.098 g, 0.00027 mol) in Methylene chloride (2.0 mL, 0.031 mol) at 0° C. was added triethylamine (0.076 mL, 0.00054 mol) and benzyl chloroformate (0.044 mL, 0.00031 mol). The reaction was warmed to 23° C. overnight. The reaction was quenched by addition of water3 and the mixture was extracted with methylene chloride (3×). The organic layers were washed with brine, dried (Na2SO4), filtered and concentrated. The residue was purified by flash chromatography (0 to 8% EtOAc/hexanes) to obtain 73 mg (54%).

Provenance & Evidence