反应详情

1.21 g of [(1H-pyrazole-1-yl)methyl](3,3,3-trifluoropropyl)malononitrile (the compound of the present invention (1)) was dissolved in 50 ml of acetonitrile. 2.19 g of ammonium cerium (IV) nitrate and 1.02 g of iodine were added to the solution, followed by stirring at room temperature for 10 hours. The reaction mixture was concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to obtain 1.71 g of [(4-iodo-1H-pyrazole-1-yl)methyl] (3,3,3-trifluoropropyl) malononitrile (referred as the compound of the present invention (42), hereinafter) shown by below formula.

1. concentrationThe reaction mixture was concentrated under reduced pressure