Hydroxyamine hydrochloride → HCID 71585443, compound

Participants

Reaction Steps

To a solution of methyl 4-((2-methyl-1-oxo-1,2,3,4-tetrahydropyrazino[1,2-a]indol-10-yl)thio)benzoate (0.25 g, impure) and NH2OH.HCl (0.35 g) in 4 mL of dry MeOH was added 1.4 mL of 25% NaOMe solution in methanol. The reaction mixture was stirred for 20 min at r.t. and 0.3 mL of more 25% NaOMe solution in methanol was added. After stirring for 2 h, the reaction mixture was quenched with 10 mL of potassium phosphate buffer solution. The mixture was extracted with 2×30 mL of EtOAc. The combined extracts were dried over Na2SO4, filtered and concentrated. The residue was purified by silica gel chromatography eluted with up to 10% MeOH/CH2Cl2 to give 0.097 g of the title product as beige solid.

Provenance & Evidence