Water → HCID 22036419, compound

Participants

Reaction Conditions

Reaction Steps

NaH (50% in mineral oil; 0.153 g, 3.50 mmol) was added to a stirred solution of 2-[3-(4-tert-butoxycarbonyl-1-piperazinyl)-2-pyrazinyloxy]ethanol (1.00 g, 3.08 mmol; prepared in Example 52, Step 2) and 2,3-dichloropyrazine (1.0 g, 6.71 mmol) in dioxane (10 mL). The reaction was stirred in a sealed tube at 100° C. overnight. The reaction mixture was poured into water and extracted with diethyl ether. The ether phase was dried (MgSO4), concentrated and purified by column chromatography on silica using toluene/EtOAc (7:3) as eluent to give 0.823 g (61%) of the title product: Pos-EI-MS shows M+ and 14 ions supporting the stated structure. HRMS m/z calcd for C19H25ClN6O4 (M)+ 436.1626, found 436.1606.

Provenance & Evidence