反应详情

A stirred mixture of 4-(3-cyclopentyloxy-4-methoxyphenyl)-4-ethynylcyclohexan-1-one (0.200 g, 0.64 mmol) and 5-(3-iodophenyl)-3-methyl-[1,2,4]oxadiazole (0.201 g, 0.70 mmol) in dry triethylamine (4.6 mL) was treated under argon with a mixture of tetrakis(triphenylphosphine)palladium (0.032 g, 0.028 mmol), cuprous iodide (0.0067 g, 0.035 mmol), and triphenylphosphine (a small crystal) at 70° C. for 1 h and at 25° C. for 15 h. The reaction mixture was concentrated in vacuo and a solution of the residue was dissolved in methylene chloride, was treated with cold dilute hydrochloric acid and was dried over anhydrous sodium sulfate. The crude product was chromatographed (silica, 5 to 10% ethyl acetate in methylene chloride/hexanes 1:1) and the pure fractions were combined, concentrated in vacuo, crystallized from ethyl ether and dried at 60° C. in vacuo to afford the titled compound as an off-white powder (0.235 g, 78%), mp 88°-91° C. Anal. (C29H30N2O4) calcd: C 74.02, H 6.43, N 5.95, found: C 73.77, H 6.53, N 5.78.

1. concentrationThe reaction mixture was concentrated in vacuo
2. dissolutiona solution of the residue was dissolved in methylene chloride
3. additionwas treated with cold dilute hydrochloric acid
4. dry with materialwas dried over anhydrous sodium sulfate
5. customThe crude product was chromatographed (silica, 5 to 10% ethyl acetate in methylene chloride/hexanes 1:1)
6. concentrationconcentrated in vacuo
7. customcrystallized from ethyl ether
8. customdried at 60° C. in vacuo