Thionyl Chloride → 3'-(4-chloromethyl-phenyl)-4-(1,5-dimethyl-1H-pyrazol-4-ylmethyl)-3,4,5,6-tetrahydro-2H-[1,2']bipyrazinyl dihydrochloride

Participants

Reaction Steps

Dissolve {4-[4-(1,5-dimethyl-1H-pyrazol-4-ylmethyl)-3,4,5,6-tetrahydro-2H-[1,2′]bipyrazinyl-3′-yl]-phenyl}-methanol (1.00 g, 2.64 mmol) in DCM (60 mL). Add thionyl chloride (6 mL) and stir at room temperature for 2 hr. Concentrate in vacuo to give 3′-(4-chloromethyl-phenyl)-4-(1,5-dimethyl-1H-pyrazol-4-ylmethyl)-3,4,5,6-tetrahydro-2H-[1,2′]bipyrazinyl dihydrochloride as a yellow solid (1.20 g, 100%). MS (ES): m/z=397 [M+H]+

Provenance & Evidence