反应详情

51.0 g (0.21 mol) of 7,8-difluoro-2-pentyl-2H-chromene are hydrogenated for 1 h at room temperature in 510 ml of toluene in the presence of Pd/C (5% Pd). The batch is concentrated to dryness. The crude product (yellowish liquid) can be used directly for the next step.

1. concentrationThe batch is concentrated to dryness