反应详情

To a mixture of 2-(5-{[4-(trans-4-hydroxycyclohexyl)-5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}thiophen-2-yl)benzonitrile (0.4 g), rhodium(I) acetate (0.0019 g) and toluene (10 mL) was added dropwise ethyl diazoacetate (0.46 mL) at 80° C., and the mixture was stirred at the same temperature for 1 hr. The reaction mixture was concentrated, and the obtained residue was subjected to silica gel column chromatography to give the title compound as a colorless solid (0.25 g, 53%).

1. concentrationThe reaction mixture was concentrated