Pentane → 1H-Purine, 6-[[3-[4-[bis(4-fluorophenyl)methyl]-1-piperazinyl]propyl]thio]-

Participants

Reaction Conditions

Reaction Steps

Pentane (10 mL) was added to sodium hydride (0.3 g, 6.3 mmol, 50% suspension in mineral oil), and the mixture was stirred under nitrogen. The pentane was decanted, anhydrous DMF (12 mL) was added and the suspension was cooled to 0° C. 6-Mercaptopurine monohydrate (0.93 g, 5.5 mmol) was added in small portions over a 15 min period. To the light beige, slightly hazy mixture was added, after an additional 10 min at 0° C., 1-(1-chloro-3-propanyl)-4-[bis(4-fluorphenyl)methyl]piperazine (2.0 g, 5.5 mmol) dissolved in anhydrous DMF (4mL) within 5 min. After addition was complete, the mixture was allowed to warm to room temperature and it was stirred under nitrogen for 4 days. The DMF was evaporated in vacuo (1 mm Hg) at 50° C. The residue was triturated in methylene chloride and the mixture was filtered through celite. The filtrate was washed with water (2×50 mL), dried (sodium sulfate), filtered, and evaporated in vacuo to give the crude product (2.79 g). Silica gel flash chromatography using 10% methanol/methylene chloride gave the desired product (1.18 g, 45%) mp 90°-93° C. 300 MHz 1H NMR (CDCl3) δ: 8.60 (s, 1H), 8.14 (s, 1H), 7.31 (m, 4H), 6.95 (m, 4H), 4.17 (s, 1H), 3.38 (m, 2H), 2.35-2.6 (m, 10H), 2.02 (m, 2H). DCI/MS (M+1) 481.

Provenance & Evidence