Diisopropylethylamine → Benzyl-1,6-diaza-spiro[3.3]heptane-6-carboxylic acid (3-phenyl-propyl)-amide

Participants

Reaction Steps

To a solution of 1-benzyl-1,6-diaza-spiro[3.3]heptane (41 mg, 217 μmol) in dichloromethane (2 mL) was added diisopropyl-ethyl-amine (112 mg, 868 μmol)) followed by (3-isocyanato-propyl)-benzene (84 mg, 521 μmol) and the reaction mixture was allowed to stir at ambient temperature for 16 h. After complete consumption of starting material the reaction mixture was diluted with dichloromethane and was washed successively with water and brine. The organic layer was dried over sodium sulfate and evaporated under reduced pressure. Purification by HPLC afforded the title compound (9 mg, 12%) as an off-white solid. MS m/e: 350 (M+H)+.

Provenance & Evidence