1''-Cyano-5-(1-methanesulfonyl-1,2,3,6-tetrahydro-pyridin-4-yl)-dispiro[2,3-dihydrofuro[2,3-c]pyridine-2,1'-cyclobutane-3',4''-piperidine] → 1''-(3-Isopropyl-[1,2,4]oxadiazol-5-yl)-5-(1-methanesulfonyl-1,2,3,6-tetrahydro-pyridin-4-yl)-dispiro[2,3-dihydrofuro[2,3-c]pyridine-2,1'-cyclobutane-3',4''-piperidine]

Participants

Reaction Conditions

Reaction Steps

Zinc chloride (0.7 mol/L in tetrahydrofuran, 0.42 mL) is added to a solution of N-hydroxy-isobutyramidine (30 mg) and 1″-cyano-5-(1-methanesulfonyl-1,2,3,6-tetrahydro-pyridin-4-yl)-dispiro[2,3-dihydrofuro[2,3-c]pyridine-2,1′-cyclobutane-3′,4″-piperidine] (100 mg) in tetrahydrofuran (4 mL) and ethyl acetate (4 mL) at room temperature. The solution is heated to 60° C. and stirred at this temperature for 2 h.

Provenance & Evidence