Diphenylsilane → 1,1-Dimethylethyl 1-(4-chlorophenyl)-2-cyclopropyl-2,7-diazaspiro[3.5]nonane-7-carboxylate

Participants

Reaction Steps

Under a nitrogen atmosphere, treat 1,1-dimethylethyl 1-oxo-3-(4-chlorophenyl)-2-cyclopropyl-2,7-diazaspiro[3.5]nonane-7-carboxylate (9) (0.76 g) in anhydrous THF (2 mL) with RhH(CO)(PPH3)3 (18 mg) and then, diphenylsilane (9.1 mL). The resulting mixture was shaken at room temperature for 2 h. Place the reaction mixture on silica gel plates (12, 1000 u) and elute with hexane/EtOAc 85/15 to give a colorless residue (0.700 g). Place this material on silica gel plates (12, 1000 u) and elute with hexane/EtOAc 85/15 to give the title compound (10) as a colorless foam (0.58 g)

Provenance & Evidence