Cesium carbonate → HCID 58407640, compound

Participants

Reaction Conditions

Reaction Steps

To a microwave-flask containing 300 mg (0.672 mmol) 5-(1,3-dioxolan-2-yl)-3-iodo-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-indazole (Example 5A), 438 mg (1.344 mmol) cesium carbonate and 32 mg (0.134 mmol) 3,4,7,8-tetramethyl-1,10-phenanthroline in methanol (4 ml) were added 13 mg (0.067 mmol) copper(I) iodide. The flask was placed in an ultrasonic bath, and argon was bubbled through for a period of five minutes. The flask was then sealed and heated to 140° C. for 2 h using microwave irradiation. The reaction mixture was filtered over celite which was washed with acetonitrile. The filtrates of a total of seven reactions at this scale were combined and purified by preparative RP-HPLC (acetonitrile/water gradient) to afford 940 mg (57% of th.) of the title compound.

Provenance & Evidence