Triethylamine → HCID 67269197, compound

Participants

Reaction Steps

To a solution of 0.022 g of 1-(4-amino-benzyl)-3-phenyl-4,5,7,8-tetrahydro-1H-1,2,6-triaza-azulene-6-carboxylic acid tert-butyl ester (Example 99) in DMF (1 mL) was added 1 equivalent of triethylamine. After 5 min, 1 equivalent of methanesulfonyl chloride was added and the mixture was stirred overnight. The reaction was quenched with water and extracted with EtOAc (3×). The combined organic layers were dried over Na2SO4 and concentrated. The resulting oil was purified by preparative TLC (50% EtOAc/hexanes) to give 1-(4-methanesulfonylamino-benzyl)-3-phenyl-4,5,7,8-tetrahydro-1H-1,2,6-triaza-azulene-6-carboxylic acid tert-butyl ester. This mono-mesylate was then dissolved in 9:1 CH2Cl2/MeOH (2 mL) and treated with 3 mL of 1 N HCl in Et2O. After 6 h, the volatiles were removed in vacuo. The resulting oil was purified by preparative TLC (9:1 CH2Cl2/2 M NH3 in MeOH) to afford 0.004 g of the title compound as a white solid. MS (ESI): exact mass calculated for C21H24N4O2S, 396.16; found, m/z 397.1 [M+H]+. 1H NMR (500 MHz, CD3OD): 7.50-7.47 (m, 2H), 7.42 (t, J=7.7 Hz, 2H), 7.37-7.34 (m, 1H), 7.22-7.20 (m, 2H), 7.13-7.10 (m, 2H), 5.34 (s, 2H), 2.97-2.93 (m, 4H), 2.92 (s, 3H), 2.90-2.87 (m, 2H), 2.82-2.78 (m, 2H).

Provenance & Evidence