Phenylboronic Acid → HCID 66718401, compound

Participants

Reaction Steps

A mixture of 1-[6-(5-amino-7-chloro[1,2,3]triazolo[4,5-d]pyrimidin-3-ylmethyl)pyridin-2-yl]pyrrolidin-2-one (0.50 g, 1.45 mmol) and phenylboronic acid (0.354 g, 2.90 mmol) in saturated aqueous sodium hydrogen carbonate (5 mL) and 1,4-dioxane (20 mL) was degassed with a stream of nitrogen for 10 min then treated with tetrakis(triphenylphosphine)palladium(0) (0.083 g, 0.0725 mmol), refluxed for 2 h then partitioned between EtOAc and water. The organic phase was separated and the aqueous phase re-extracted with EtOAc (×2). The combined organic extracts were dried (MgSO4), concentrated in vacuo to give a yellow solid (1.00 g) which was purified by column chromatography [SiO2; EtOAc-hexane (1:1) then EtOAc]. The resulting yellow solid (0.68 g) was triturated with diethyl ether to give the title compound (0.38 g, 68%) as an off-white solid.

Provenance & Evidence