Hydrochloric Acid → (2R)-2-{2-Chloro-5-[2-chloro-7-((1R)-1-hydroxymethylbutylamino)-thiazolo[4,5-d]pyrimidin-5-yldisulfanyl]-thiazolo[4,5-d]pyrimidin-7-ylamino}-pentan-1-ol

Participants

Reaction Steps

(2R)-2-[(2-Amino-5-mercapto[1,3]thiazolo[4,5-d]pyrimidin-7-yl)amino]pentan-1-ol (4.0 g, 14 mmol) was dissolved in acetonitrile (100 ml) and concentrated hydrochloric acid (150 mL). Sodium nitrite (1.93 g, 28 mmol) was dissolved in water (10 mL) and added at 0° C. The reaction mixture was left at 0° C. for 2 days until the reaction was complete by LCMS. The reaction mixture was poured onto ice and the precipitated product was collected by filtration. The solid was dried in vacuo to give 3.3 g (78% yield) of the title compound.

Provenance & Evidence