2-Mercaptoethanol → HCID 22036258, compound

Participants

Reaction Conditions

Reaction Steps

Sodium hydroxide (0.92 g, 23 mmol) was dissolved in water (9 mL) and dioxane (15 mL). 2-Mercaptoethanol (0.54 mL, 7.7 mmol) was added while stirring and 2-chloro-3-(4-tert-butoxycarbonyl-1-piperazinyl)pyrazine (2.3 g, 7.7 mmol, from Example 52, step 1) in dioxane (10 mL) was added. The reaction mixture was heated at 100° C. for 22 h. After cooling to room temperature, it was extracted with EtOAc. The organic layer was dried (K2CO3) and the solvent was removed under reduced pressure. The residue was purified by chromatography on silica gel using hexane/ EtOAc (1:1) as eluent to give 1.71 g (65%) of the title compound as an orange oil. MS m/z 341 (M+H)+.

Provenance & Evidence