Pyridine → HCID 57941372, compound

Participants

Reaction Steps

A mixture of (4S,7R)-1-phenyl-7,8,8-trimethyl-1,2,4,5,6,7-hexahydro-4,7-methano-indazol-3-one (Intermediate 8; 1.00 g, 3.7 mmol), phenyl-boronic acid (0.94 g, 7.5 mmol), and copper(II) acetate (1.03 g, 5.6 mmol) in dichloromethane (10 mL) and pyridine (0.6 mL, 7.5 mmol) was stirred at room temperature for 2 days and then heated at reflux for 2 h. The reaction mixture was diluted with water and dichloromethane. The aqueous layer was extracted twice with dichloromethane, and the combined organic layers were washed with water, 10% copper(II) sulfate solution, water, and brine. The solution was then dried (magnesium sulfate), filtered, evaporated and purified using an Analogix Intelliflash 280 system (Analogix, Inc., Burlington, Wis.) with an Analytical Sales Aspire 90 g column, eluting with 10-50% ethyl acetate/hexanes to give (4S,7R)-7,8,8-trimethyl-1,2-diphenyl-1,2,4,5,6,7-hexahydro-4,7-methano-indazol-3-one (0.57 g, 44%) as a light brown solid. ES(+)-MS (M+H) 345.

Provenance & Evidence