Potassium Carbonate → 1,1-Dimethylethyl N-[3-[7-[2-(4-cyano-2-fluorophenoxy)ethyl]-9-oxa-3,7-diazabicyclo[3.3.1]non-3-yl]propyl]carbamate

Participants

Reaction Conditions

Reaction Steps

A suspension of 3-Fluoro-4-[2-(9-oxa-3,7-diaza-bicyclo[3.3.1]non-3-yl)-ethoxy]-benzonitrile hydrochloride hydrochloric acid salt (5 g, 0.0137 mol, from step N (vii) above ), (3-Bromo-propyl)-carbamic acid tert-butyl ester (4.24 g, 0.0178 mol, from step (i) above) and potassium carbonate (7.57 g, 0.0548 mol) in dry acetonitrile (100 ml) was stirred at 60° C. overnight under nitrogen atmosphere. The reaction mixture was filtered through celite and solvent concentrated under reduced pressure. The residue was purified by column chromatography over silica gel using 5% methanol in dichloromethane as eluent to give the sub-title compound (5.8 g) as yellow oil.

Provenance & Evidence