Potassium Phosphate, Tribasic → HCID 118071312, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of Intermediate 352F (0.370 g, 0.852 mmol) and (3-chloro-4-fluorophenyl)boronic acid (0.297 g, 1.704 mmol) in dioxane (2 mL) was added a solution of K3PO4 (0.543 g, 2.56 mmol) in water (0.5 mL) and the reaction mixture was purged with nitrogen for 10 min. PdCl2(dppf)CH2Cl2 (0.052 g, 0.064 mmol) was then added and the reaction mixture was heated to 80° C. and stirred for 16 h. The reaction mixture was diluted with water and extracted with EtOAc (3×30 mL). The combined organic layers were washed with water, dried over Na2SO4 and concentrated. The crude compound was purified by silica gel chromatography (12 g REDISEP® column, eluting with 4% MeOH in CHCl3). Fractions containing the product were combined and evaporated to afford Intermediate 352G (0.270 g, 54%) as an off-white solid. MS(ES): m/z=437 [M+H]+.

Provenance & Evidence