2-(Methoxymethyl)-2'-methylbiphenyl-4-carboxylic acid → Tert-butyl (2-fluoro-4-{5-[2-(methoxymethyl)-2'-methylbiphenyl-4-yl]-1,2,4-oxadiazol-3-yl}phenoxy)acetate

Participants

Reaction Steps

The title compound was prepared following procedure described for example 4, step 1, but starting from Intermediate 28 (1 281.50 mg; 5 mmol) and Intermediate 49 (1 421.44 mg; 5 mmol). The reaction mixture was filtered through a SPE NH2 column (10 g) and rinsed with ACN. The filtrate was passed through a SPE SCX column (10 g) and rinsed with ACN. After evaporation of the solvents, the crude product was purified by flash chromatography (c-hex/(DCM/EtOAc 1:1) gradient from 1:0 to 1:1), affording the title compound as a white powder. 1H NMR (CDCl3) δ 8.41 (d, J=1.3 Hz, 1H), 8.15 (dd, J=7.8, 1.8 Hz, 1H), 7.98-7.91 (m, 2H), 7.36-7.23 (m, 4H), 7.13 (d, J=7.1 Hz, 1H), 7.03-6.97 (m, 1H), 4.68 (s, 2H), 4.22 (s, 2H), 3.33 (s, 3H), 2.07 (s, 3H), 1.49 (s, 9H). LC/MS (Method B): 505.2 (M+H)+. HPLC (Method A) Rt 6.36 min (Purity: 98.6%).

Provenance & Evidence