Potassium Phosphate, Tribasic → tert-butyl {1-[4-(2-phenyl-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepin-3-yl)phenyl]cyclopropyl}carbamate

Participants

Reaction Conditions

Reaction Steps

A suspension of 3-bromo-2-phenyl-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepine (50 mg) and tert-butyl {1-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]cyclopropyl}carbamate (92 mg) and potassium phosphate (82 mg) and PdCl2(dppf)CH2Cl2 (11 mg) in dioxane (2.5 mL) and H2O (0.25 mL) was degassed for 5 min then stirred at 80° C. for 18 h. The reaction mixture was concentrated under reduced pressure. Purification by column chromatography (0-50% ethyl acetate in hexanes) gave the product (51 mg, 74%). 1HNMR (DMSO-d6) 400 MHz δ: 8.55 (s, 1H), 8.09-8.04 (m, 1H), 7.98-7.93 (m, 1H), 7.70 (br s, 1H), 7.48 (d, J=6.9 Hz, 2H), 7.39-7.06 (m, 10H), 6.94-6.87 (m, 1H), 6.78-6.65 (m, 1H), 1.44-1.08 (m, 13H). LCMS: 542 [M+H].

Provenance & Evidence