Diisopropylethylamine → HCID 67360421, compound

Participants

Reaction Steps

A mixture of the product of Example 58D (171 mg, 0.518 mmol), the product of Example 32A (157 mg, 0.518 mmol), 2-(3H-[1,2,3]triazolo[4,5-b]pyridin-3-yl)-1,1,3,3-tetramethylisouronium hexafluorophosphate(V) (197 mg, 0.518 mmol), and N-ethyl-N-isopropylpropan-2-amine (0.361 mL, 2.07 mmol) in CH2Cl2 (5 mL) was stirred at ambient temperature for 36 hours. The reaction mixture was diluted by CH2Cl2, and the organic mixture was washed with 1 N aqueous HCl and saturated NaHCO3 solution and brine, dried with Na2SO4, filtered, and concentrated in vacuo. The crude product was chromatographed on silica gel (Analogix® Intelliflash™ 280; SF15-24 g column; 50% ethyl acetate/hexanes) to afford purified material that was taken up in a minimal amount of ether. Addition of hexanes caused formation of a solid that was collected by vacuum filtration and air-dried to give the title compound. 1H NMR (300 MHz, DMSO-d6) δ ppm 7.59-7.47 (m, 4H), 7.40-7.29 (m, 4H), 7.18-7.04 (m, 8H), 5.48 (s, 1H), 4.41-4.29 (m, 1H), 4.19 (d, J=16.5, 1H), 4.09 (d, J=16.6, 1H), 3.86-3.75 (m, 1H), 3.38-3.30 (m, 2H), 3.05-2.89 (m, 1H), 2.85-2.63 (m, 3H), 2.63-2.51 (m, 1H), 1.40-1.17 (m, 4H); MS (DCI+) m/z 617 (M+H)+.

Provenance & Evidence