Phosphoric Acid → (s)-n-[2-(2,3,-Dihydrobenzofuran-5-yl)-1-methylethyl]-n-ethyl-(1-methanesulfonylpiperidin-4-ylmethyl)amine phosphate

Participants

Reaction Steps

(S)-N-[2-(2,3,-Dihydrobenzofuran-5-yl)-1-methylethyl]-N-ethyl-(1-methanesulfonylpiperidin-4-ylmethyl)amine (0.4 grams, 1.05 mmole) was dissolved in (10 ml) hot 10% aqueous ethanol. To this solution was added 85% phosphoric acid (0.122 grams, 1.06 mmole). The solution was stored at 22° C. for 16 hours. The deposited crystals were collected and dried in vacuo at 70° C. to give (S)-N-[2-(2,3,-dihydrobenzofuran-5-yl)-1-methylethyl]-N-ethyl-(1-methanesulfonylpiperidin-4-ylmethyl)amine phosphate (0.454 grams, 97%), m.p. 209-210° C.

Provenance & Evidence