Benzenesulfonyl chloride → N-{2-[3'-(4-Methoxymethyl-phenyl)-2,3,5,6-tetrahydro-[1,2']bipyrazinyl-4-yl]-ethyl}-N-methyl-benzenesulfonamide hydrochloride

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Reaction Steps

Dissolve benzenesulfonyl chloride (0.087 g, 0.49 mmol, 1.1 eq.) in dichloromethane (4 mL). Add {2-[3′-(4-methoxymethyl-phenyl)-2,3,5,6-tetrahydro-[1,2′]bipyrazinyl-4-yl]-ethyl}-methyl-amine (0.150 g, 0.440 mmol, 1 eq.). Add morpholine, polymer-bound (0.201 g, 0.490 mmol, 1.1 eq.). Stir at room temperature for 2 hr. Purify by SCX chromatography (column washed with methanol and extracted with 7N NH3/MeOH) to afford the free base of the title compound (0.202 g, 95% yield). MS (loop): m/z=482.3 [M+H].

Provenance & Evidence