Diisopropylethylamine → HCID 118380136, compound

Participants

Reaction Steps

To a cooled (0° C.) slurry of (Z)-2-((1-((benzhydryloxy)carbonyl)cyclopropoxy)-imino)-2-(2-((tert-butoxycarbonyl)amino)thiazol-4-yl)acetic acid (15.3 mg, 0.028 mmol), tert-butyl 2-(((2R,3S)-3-amino-4-oxoazetidin-2-yl)methyl)-4,6-dihydropyrrolo[3,4-d][1,2,3]triazole-5(2H)-carboxylate (8.3 mg, 0.027 mmol) and HATU (11.4 mg, 0.029 mmol) in DMF (500 μL) was added DIPEA (9.5 μL, 0.054 mmol). After stirring at rt for 16 h, it was diluted with EtOAc and washed with LiCl (5%, aq). The aqueous layer was extracted with EtOAc (3×) and the combined organic layers were washed with brine, dried over Na2SO4 and concentrated in vacuo. The crude residue was purified via silica gel chromatography (EtOAc-Heptane) to afford the title compound (18.1 mg, 81%) as a white solid. Rt=1.08 min, m/z=828.5 (M+1) Method 2m_acidic.

Provenance & Evidence