2-Isopropoxyphenylboronic acid → 2-Chloro-8-(2-isopropoxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridine

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Reaction Steps

2-Chloro-8-(2-isopropoxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridine was prepared from 8-bromo-2-chloro-[1,2,4]triazolo[1,5-a]pyridine and 2-isopropoxyphenylboronic acid in a manner analogous to Example 2c (0.24 g, 40%). MS=288 (MH)+. 302b) 7-[8-(2-Isopropoxy-phenyl]-[1,2,4]triazolo[1,5a]pyridine-2-ylamino]-1,2,4,5-tetrahydro-benzo[d]azepine-3-carboxylic acid tert-butyl ester was prepared from 2-chloro-8-(2-isopropxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridine and 7-amino-1,2,4,5-tetrahydro-3-benzazepin-3-carboxylic acid tert-butyl ester with 2,2′-bis-dicyclohexylphosphanyl-biphenyl as the ligand in a manner analogous to Example 2d (0.35 g, 82%). MP=112-114° C. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 9.54 (s, 1H), 8.73 (d, 1H), 7.60 (m, 2H), 7.48 (s, 1H), 7.38 (m, 2H), 7.17 (m, 1H), 7.05 (m, 3H), 4.57 (m, 1H), 3.44 (m, 4H), 2.80 (m, 4H), 1.41 (s, 9H), 1.15 (m, 6H). MS=514 (MH)+.

Provenance & Evidence