p-Toluenesulfonic acid monohydrate → 1-Benzyl-4-methylpiperidin-3-OL 4-methylbenzenesulfonate

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of the product from Method C (65.32 grams/0.318 mol) dissolved in 175 mL of acetone and cooled to 0° C. was added a solution of para-toluenesulfonic acid monohydrate in 350 mL of acetone (dropwise) over 2 hours and the resulting mixture stirred at 0° C. for 1.5 hours. The precipitate was filtered and the filter cake washed with 90 mL of diisopropyl ether. The solid product was then dried in vacuo affording 58.55 grams (100%) of the title compound as a white solid. LRMS: 378.5 (M+1).

Provenance & Evidence