反应详情

温度

60 °C

Under exclusion of moisture, to 500 mg (1.76 mmol) of 1-chloro-4-[(6-methoxy-pyridin-3-yl)methyl]-isoquinoline (step 28.6) in 9 ml of chloroform, 488 μl (3.58 mmol) of Me3Sil are added. Then the mixture is stirred for 8 h at 60° C. Dilution of the mixture with EtOAc and NaHCO3-solution, stirring and filtration of the suspension yields 1-chloro-4-[(6-hydroxy-pyridin-3-yl)methyl]-isoquinoline, contaminated with 1-iodo-4-[(6-hydroxy-pyridin-3-yl)methyl]-isoquinoline; FAB-MS: (M+H)+=271chloride/363iodide; HPLC(gradient20-100) tRet=10.2chloride/10.8iodide. From the filtrate, more product can be obtained by extraction with EtOAc.

1. filtrationfiltration of the suspension