HCID 67269324, compound → HCID 67268839, compound

Participants

Reaction Steps

3-(4-Chloro-phenyl)-1-(4-nitro-benzyl)-4,5,7,8-tetrahydro-1H-1,2,6-triaza-azulene-6-carboxylic acid tert-butyl ester (Example 98, 70 mg) was dissolved in 25 mL of anhydrous EtOH and treated with 10% palladium on carbon (20 mg). The mixture was subjected to hydrogen for 4 h at 30 psi. The mixture was filtered through diatomaceous earth. The filtrate was concentrated and dried via vacuum line to afford 55 mg of 1-(4-amino-benzyl)-3-phenyl-4,5,7,8-tetrahydro-1H-1,2,6-triaza-azulene-6-carboxylic acid tert-butyl ester. The intermediate aniline was then dissolved in 1 mL of MeOH and treated with 5 mL of 1 N HCl in Et2O. After 6 h, the volatiles were removed in vacuo. The resulting yellow semi-solid was purified by preparative TLC (9:1 CH2Cl2/2 M NH3 in MeOH) to afford 0.007 g of the title compound as a light yellow solid. MS (ESI): exact mass calculated for C20H22N4, 318.18. found, m/z 319.2 [M+H]+. 1H NMR (500 MHz, CD3OD): 7.50-7.47 (m, 2H), 7.44-7.41 (m, 2H), 7.37-7.34 (m, 1H), 6.94-6.90 (m, 2H), 6.68-6.65 (m, 2H), 5.23 (s, 2H), 3.11-3.06 (m, 4H), 2.99-2.96 (m, 2H), 2.91-2.88 (m, 2H).

Provenance & Evidence