Tris(1,1-dimethylethyl)phosphine → (1R)-1'-{[1-(4-pyridin-4-ylphenyl)cyclopropyl]carbonyl}-3H-spiro[2-benzofuran-1,3'-pyrrolidin]-3-one

Participants

Reaction Steps

A mixture of (1R)-1′-{[1-(4-bromophenyl)cyclopropyl]carbonyl}-3H-spiro[2-benzofuran-1,3′-pyrrolidin]-3-one (25 mg, 0.061 mmol), 4-(tributylstannyl)pyridine (24 mg, 0.067 mmol), tris(dibenzylideneacetone)dipalladium(0) (3 mg, 0.003 mmol), tri-tert-butylphosphine (1.5 mg, 0.007 mmol), and potassium fluoride (12 mg, 0.20 mmol) in tetrahydrofuran (0.3 ml) was microwave irradiated at 90° C. for 15 minutes. Then the desired product was obtained from the mixture by prep-HPLC (3.2 mg, yield: 13%). LCMS: m/z 411.1 (M+H)+; 433.0 (M+Na)+.

Provenance & Evidence