Sodium Hydroxide → 1,3-Bis{[7-(3-chlorophenyl)-1-oxo-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazin-4-yl]methyl}urea

Participants

Reaction Steps

Step b 71 mg (0.206 mmol) of {[7-(3-chlorophenyl)-1-oxo-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazin-4-yl]methyl}carbamic azide were dissolved in 10 ml of dry THF, NaOH 1N (2 ml) was added and the mixture was stirred at room temperature for 30 minutes. The reaction was diluted with EtOAc and extracted with water, the organic layer was mixed with HCl 2N (5 ml) for 10 minutes, and then discarded; the aqueous solution was brought to pH 10 with NaOH 23% (10 ml) and portioned between EtOAc (10 ml) and THF (10 ml). The organic layers were washed with brine, dried over Na2SO4 and evaporated under reduced pressure to give the title compound 50 mg (89%) as a light yellow solid.

Provenance & Evidence