Dimethylformamide → 1'-{[1-(4-hydroxyphenyl)cyclopropyl]carbonyl}-3H-spiro[furo[3,4-c]pyridine-1,3'-pyrrolidin]-3-one

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Reaction Conditions

Reaction Steps

A solution of 1-(4-hydroxyphenyl)cyclopropanecarboxylic acid (0.250 g, 0.00140 mol), benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (0.652 g, 0.00147 mol) in N,N-dimethylformamide (2.0 mL, 0.026 mol) was stirred at rt for 10 minutes. The solution then was cooled to 0° C. and (1R)-3H-spiro[furo[3,4-c]pyridine-1,3′-pyrrolidin]-3-one (0.53 g, 0.0014 mol) was added to the solution followed by N,N-diisopropylethylamine (610 μL, 0.0035 mol). The resulting mixture was stirred at room temperature overnight. After work-up, 0.95 g of the crude product was obtained, which was used without further purification.

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