Naphthalene → HCID 59216880, compound

Participants

Reaction Conditions

Reaction Steps

(−)-5-(Diphenylphosphinoyl)-6-(2-methoxynaphthalen-1-yl)-4,7-dimethyl-1,3-dihydroisobenzofuran (800 mg, 1.59 mmol, 92% ee) was placed into a flask and the atmosphere in the flask was replaced with nitrogen. Triethylamine (4.4 mL, 31.8 mmol) was added to a solution of this naphthalene compound in xylene (40 mL), and cooled to 4° C. Further, trichlorosilane (800 μL, 7.95 mmol) was added dropwise, and the mixture was stirred for 30 minutes and then stirred at room temperature for 15 minutes. Further, the reaction mixture was heated to 110° C. and stirred for 3 hours. After the resulting reaction mixture was cooled to room temperature, diethyl ether (60 mL) and saturated aq. sodium bicarbonate (800 μL) were added, and the mixture was stirred for 30 minutes. The reaction mixture was filtered through Celite, and after the filtrate was dried with sodium sulfate. After silica gel was added, the mixture was concentrated under reduced pressure. The residue was purified by silica gel chromatography to obtain the title compound (694 mg, 89%, 92% ee).

Provenance & Evidence