(3R)-3-ethynyl-1-azabicyclo[2.2.2]octan-3-ol → (3r)-3-({2-Benzyl-6-[(3r,4s)-3-Hydroxy-4-Methoxypyrrolidin-1-Yl]pyridin-3-Yl}ethynyl)-1-Azabicyclo[2.2.2]octan-3-Ol

Participants

Reaction Steps

A mixture of 4.6 g of 2-benzyl-3-iodo-6-[(3R,4S)-3-hydroxy-4-methoxypyrrolidine-1-yl]pyridine, 1.7 g of (3R)-3-ethynyl-3-quinuclidinol, 130 mg of tetrakis(triphenylphosphine)palladium(0), 110 mg of cuprous iodide and 3.1 ml of triethylamine was stirred for 5 hours at room temperature in a nitrogen atmosphere. The reaction solution was extracted with aqueous dilute ammonia-ethyl acetate, and the organic phase was washed with water and brine, dried over anhydrous magnesium sulfate and then concentrated. The residue was subjected to NH-silica gel column chromatography using 0-5% methanol/ethyl acetate, to give 4.0 g of the target compound.

Provenance & Evidence