反应详情

0.7 g (1.7 mmol) of 2-(2′,3′-difluoro-4′-propoxybiphenyl-4-yl)-5-propenyl-selenophene is hydrogenated in 30 ml of ethyl acetate/toluene (2:1), in the presence of Pd/C (5% of Pd) at atmospheric pressure and RT. The reaction soln. is filtered and concentrated to dryness. Recrystallisation from n-heptane/toluene (4:1) gives 2-(2′,3′-difluoro-4′-propoxybiphenyl-4-yl)-5-propylselenophene as a solid having an m.p. of 114° C.

1. filtrationis filtered
2. concentrationconcentrated to dryness
3. customRecrystallisation from n-heptane/toluene (4:1)