Sodium borohydride → N-[1-(phenylmethyl)-4-piperidinyl]-3-pyridinamine

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 27 parts of N-[1-(phenylmethyl)-4-piperidinylidene]-3-pyridinamine in 40 parts of ethanol are added portionwise 3.8 parts of sodium borohydride. After the addition is complete, the whole is heated to 50° C. The solvent is evaporated. The oily residue is dissolved in 150 parts of hydrochloric acid 1 N and filtered. The filtrate is rendered alkaline with ammonium hydroxide and extracted with methylbenzene. The organic layer is dried over magnesium sulfate, filtered and evaporated. The solid residue is washed with 2,2'-oxybispropane and dried, yielding 14 parts of N-[1-(phenylmethyl)-4-piperidinyl]-3-pyridinamine; mp. 131°-133° C.; beige, amorphous powder.

Provenance & Evidence