Cesium carbonate → (1R)-1'-({1-[4-(Pyridin-4-ylmethoxy)phenyl]cyclopropyl}-carbonyl)-3H-spiro[2-benzofuran-1,3'-pyrrolidin]-3-one

Participants

Reaction Steps

A mixture of (1R)-1′-{[1-(4-hydroxyphenyl)cyclopropyl]carbonyl}-3H-spiro[2-benzofuran-1,3′-pyrrolidin]-3-one (15 mg, 0.043 mmol), 4-(bromomethyl)pyridine hydrobromide (13 mg, 0.052 mmol), Cesium Carbonate (56 mg, 0.17 mmol), and Tetra-n-butylammonium iodide (1.6 mg, 0.004 mmol) in Dimethyl sulfoxide (0.3 ml) was stirred at r.t. overnight. Then the desired product was obtained from the mixture by prep-HPLC (10.0 mg, yield: 53%). LCMS: m/z 441.1 (M+H)+, 463.1 (M+Na)+.

Provenance & Evidence