Water → HCID 67269477, compound

Participants

Reaction Steps

To a solution of 2-benzyl-3-(4-chloro-phenyl)-4,5,7,8-tetrahydro-2H-1,2,6-triaza-azulene-6-carboxylic acid tert-butyl ester (0.1 mmol) (Example 59, Step D) in THF (25 mL) was added lithium aluminum hydride (100 mg). The mixture was heated at reflux for 4 h. Water (1 mL) was added, the mixture was filtered, and the filtrate was concentrated. After purification (SiO2, EtOAc/hexanes), 2-benzyl-3-phenyl-2,4,5,6,7,8-hexahydro-1,2,6-triaza-azulene-6-carboxylic acid tert-butyl ester was obtained. The intermediate was diluted with CH2Cl2 (5 mL) and TFA (1 mL) was added. The reaction mixture was stirred at RT for 4 h. The reaction mixture was concentrated to obtain the title compound (0.018 g). MS (ESI): exact mass calculated for C20H21N3, 303.17; found, m/z 304.3 [M+H]+. 1H NMR (400 MHz, CD3OD): 7.38-7.35 (m, 3H), 7.19-7.18 (m, 3H), 7.12-7.10 (m, 2H), 5.13 (s, 2H), 3.35-3.21 (br m, 6H), 3.34-3.30 (br m, 2H), 2.81-2.79 (br m, 2H).

Provenance & Evidence