Triethylamine → HCID 20349895, compound

Participants

Reaction Steps

Compound 13 (0.5 g, 1.5 mmol) was dissolved in a mixture of THF/MeOH (1:1) and DOWEX-H+ resin (0.10 g) was added and the heterogeneous mixture was stirred for 20 hours. The DOWEX-H+ resin was removed by filtration and triethylamine (50 mg, 0.5 mmol) was added and the solvent was removed under reduced pressure. The residue was purified by flash chromatography (100% ether) to give compound 14. 14: 75% yield; bright yellow solid; 1H NMR (400 MHz, CDCl3) δ 8.08 (s, 1H), 7.94 (d, 2H, J=9.1 Hz), 6.69 (d, 2H, J=9.2 Hz), 4.42-4.32 (m, 2H), 4.05 (m, 1H), 3.80-3.70 (m, 2H), 3.12 (s, 6H); 13C NMR (100 MHz, CDCl3) δ 199.0, 164.8, 155.5, 154.0, 134.6, 119.4, 117.9, 111.8, 111.7, 92.8, 70.3, 70.2, 66.9, 66.8, 63.6, 63.5, 40.3, 40.2; HRMS Calc for C15H18N2O4 (M+H)+ 291.1345 Found 291.1361.

Provenance & Evidence