tert-Butyl 4-(4-aminophenyl)piperidine-1-carboxylate → HCID 49839608, compound

Participants

Reaction Steps

2-Chloro-8-(1-p-tolyl-1H-pyrazol-4-yl)-[1,2,4]triazolo[1,5-a]pyridine was prepared from 8-bromo-2-chloro-[1,2,4]triazolo[1,5-a]pyridine and 1-p-tolyl-pyrazole-4-boronic acid in a manner analogous to Example 2c (0.40 g, 68%). 287b) 4-{4-[8-(1-p-Tolyl-1H-pyrazol-4-yl)-[1,2,4]triazolo[1,5-a]pyridine-2-ylamino]-phenyl}-piperidine-1-carboxylic acid tert-butyl ester was prepared from 2-chloro-8-(1-p-tolyl-1H-pyrazol-4-yl)-[1,2,4]triazolo[1,5-a]pyridine and 4-(4-amino-phenyl)-piperidine-1-carboxylic acid tert-butyl ester with 2,2′-bis-dicyclohexylphosphanyl-biphenyl as the ligand in a manner analogous to Example 2d (0.265 g, 40%). MP=124-125° C. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 9.60 (s, 1H), 9.24 (s, 1H), 8.68 (d, 1H), 8.64 (s, 1H), 7.98 (m, 1H), 7.77 (m, 2H), 7.66 (m, 2H), 7.40 (m, 2H), 7.21 (m, 2H), 4.08 (m, 2H), 2.80 (m, 2H), 2.62 (m, 1H), 2.38 (s, 3H), 1.73 (m, 2H), 1.48 (m, 2H), 1.41 (s, 3H). MS=550 (MH)+.

Provenance & Evidence