反应详情

温度

73 °C

A saturated solution of NaHCO3 (1 mL) was added to a solution of 9 (20 mg, 0.029 mmol), 4-chlorobenzeneboronic acid (11 mg, 0.068 mmol) and bis(triphenyl-phosphine)palladium (II) chloride (4 mg, 0.0063 mmol) in dimethoxyethane (DME; 6 mL). The resulting solution was heated at 73° C. for 8 h. Then, the reaction mixture was successively cooled down to room temperature, partitioned between water and ethyl acetate, dried (Na2SO4) and evaporated. Purification by column chromatography (CH2Cl2/methanol, 97:3) afforded the target product contaminated with impurities. The product was further purified by trituration in methanol, then filtered off to give the target product 10: m/z=704 (M+H)+. NMR (DMSO-d6): δ (ppm) 1.23-1.33 (m, 6H), 1.42-1.53 (m, 8H), 1.67-1.77 (m, 2H), 1.87-2.02 (m, 2H), 2.80 (m, 1H, CH cyclohexyl), 3.15 (m, 4H, 2×CH2NHCO), 3.83 (s, 3H, OCH3), 4.44 (s, 2H, CH2CONH), 5.00 (s, 2H, CH2O), 7.04-7.09 (m, 3H), 7.23 (d, J=2.6 Hz, 1H), 7.29 (d, J=8.5 Hz, 1H), 7.40-7.47 (m, 7H), 7.76 (d, J=8.4 Hz, 1H), 7.93 (s, 1H), 8.30 (broad s, 1H, NH), 8.51 (broad s, 1H, NH).

1. temperatureThen, the reaction mixture was successively cooled down to room temperature
2. custompartitioned between water and ethyl acetate
3. dry with materialdried (Na2SO4)
4. customevaporated
5. customPurification by column chromatography (CH2Cl2/methanol, 97:3)
6. customafforded the target product
7. customThe product was further purified by trituration in methanol
8. filtrationfiltered off