反应详情

339 g of the product from Example 17a were dissolved in 2,000 ml of tetrahydrofuran, and 20 g of catalyst (palladium on carbon, 5% by weight) were added. Hydrogenation was carried out with hydrogen at 25 to 30 bar for 13 hours at room temperature. The mixture was then filtered and the solvent stripped off in vacuo. A solid remained. The yield was 274 g (=96% of theory). 19F-NMR: -61.2 and -86.6 ppm; 1H-NMR: 3.02 ppm.

1. filtrationThe mixture was then filtered