反应详情

The title compound was prepared in the same manner as the compound of example 6, starting with 25 g of alpha,alpha-bis(4-fluorophenyl)-4-piperidineethanol, 0.25 molar methylbenzene solvate and 50 mL of trifluoroacetic acid. Crystallization from hexane gave 19.6 g (83%) of the hexane solvate of 4-[2,2-bis(4-fluorophenyl)ethenyl]-piperidine, mp 84°-86° C. Analysis Calculated for C19H19F2N.O.15C6H14 : C, 76.54; H, 6.81; N, 4.49; F, 12.17. Found: C, 76.87; H, 6.72; 4.65; F, 12.12.

1. customCrystallization from hexane