反应详情

A mixture of 2-amino-9-[(1S,2R,3S,4S)-2,3-dihydroxy-4-(hydroxymethyl)-cyclopentyl]-1,9-dihydro-6H-purin-6-one (60.0 g, 0.213 mol) and benzyl bromide (60.9 mL, 0.512 mol) in DMSO (300 mL) was stirred at room temperature for 18 h. Concentrated HCl aqueous solution (150 mL) was added to the reaction mixture and stirring was continued for 45 min. The resulting mixture was poured into MeOH (1800 ml). The solution was neutralized with 2 M NaOH solution. The resulting white precipitate was collected by filtration, washed with water, and dried under vacuum to afford the product (48 g, 93.3%). LCMS calculated for C12H12N5O (M+H): 242.1; found: 242.1.

1. stirringstirring
2. waitwas continued for 45 min
3. filtrationThe resulting white precipitate was collected by filtration
4. washwashed with water
5. customdried under vacuum