Triethylamine → tert-butyl 4-{[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 (151 mg, 0.403 mmol, 1 eq.) in 4 mL of ethanol was added tert-butyl 4-aminopiperidine-1-carboxylate (96 mg, 0.483 mmol, 1.2 eq.) and triethylamine (0.08 mL, 0.6 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 203 mg (94%) of tert-butyl 4-{[8-(2-chlorophenyl)-9-(4-chlorophenyl)-9H-purin-6-yl]amino}piperidine-1-carboxylate. 1H NMR (300 MHz, CHLOROFORM-d) δ ppm 1.38-1.55 (m, 11 H) 2.14 (d, J=12.34 Hz, 2 H) 2.98 (t, J=12.10 Hz, 2 H) 4.00-4.21 (m, 2 H) 4.28-4.52 (m, 1 H) 5.83 (d, J=7.63 Hz, 1 H) 7.17-7.27 (m, 2 H) 7.31-7.44 (m, 5 H) 7.50 (d, J=6.88 Hz, 1 H) 8.44 (s, 1 H), [M+H]+ 539.4.

Provenance & Evidence