Triethylamine → tert-butyl (3S)-3-{[8-(2-chlorophenyl)-9-(4-chlorophenyl)-9H-purin-6-yl]amino}piperidine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a solution of 6-chloro-8-(2-chlorophenyl)-9-(4-chlorophenyl)-9H-purine (100 mg, 0.267 mmol, 1 eq.) in 3 mL of ethanol was added tert-butyl (3S)-3-aminopiperidine-1-carboxylate (64 mg, 0.32 mmol, 1.2 eq.) and triethylamine (0.06 mL, 0.4 mmol, 1.5 eq.). The reaction was heated to 80° C. for 16 h. The reaction was concentrated in vacuo. The crude material was purified by silica gel column chromatography using 0-100% ethyl acetate/hexanes to yield 137 mg (95%) of tert-butyl (3S)-3-{[8-(2-chlorophenyl)-9-(4-chlorophenyl)-9H-purin-6-yl]amino}piperidine-1-carboxylate. 1H NMR (300 MHz, CHLOROFORM-d) δ ppm 1.43 (br. s., 9 H) 1.60-1.76 (m, 2 H) 1.77-1.93 (m, 1 H) 2.08-2.22 (m, 1 H) 3.30 (br. s., 2 H) 3.60 (br. s., 1 H) 3.98 (br. s., 1 H) 4.42 (br. s., 1 H) 5.96 (d, J=7.54 Hz, 1 H) 7.14-7.68 (m, 8 H) 8.48 (s, 1 H), [M+H]+ 539.4.

Provenance & Evidence