tert-butyl 3,9-diazaspiro[5.6]dodecane-9-carboxylate

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of tert-butyl 4,4-bis(2-(methylsulfonyloxy)ethyl)azepane-1-carboxylate (500 mg, 1.12 mmol), MeOH (2 ml) and NH3 solution (1.5 ml) was heated at 50° C. in a sealed tube for 16 h. The reaction mixture was concentrated under reduced pressure and the crude material was washed with hexanes and dried to afford the desired compound as a yellowish semi-solid which was used in the next step without further purification. The reaction mixture was concentrated under reduced pressure the crude material was washed with hexanes dried