Dimethyl Sulfoxide → HCID 89699413, compound

Participants

Reaction Conditions

Reaction Steps

Into an 8-mL sealed tube, was placed a solution of 6-([[4-(dimethoxymethyl)pyridin-3-yl]oxy]methyl)pyridine-2-carboxylic acid (150 mg, 0.49 mmol, 1.00 equiv) in dichloromethane (4 mL) and trifluoroacetic acid (2 mL). The resulting solution was stirred for 3.5 h at 45° C. in an oil bath. The resulting mixture was concentrated under vacuum. The crude product (100 mg) was purified by Prep-HPLC with the following conditions (2#-AnalyseHPLC-SHIMADZU(HPLC-10)): Column, SunFire Prep C18 OBD Column, 5 um, 19*150 mm; mobile phase, water with 0.05% TFA and MeCN (10% MeCN up to 35% in 4 min, up to 100% in 1 min, down to 10% in 1 min); Detector, Waters2545 UvDector 254&220 nm. This resulted in 49 mg (38%) of 6-[[(4-formylpyridin-3-yl)oxy]methyl]pyridine-2-carboxylic acid as a light yellow solid. LC-MS-PH-GBT-ZL-HS-19-0 (ES, m/z): 259 [M+1]+ H-NMR-PH-GBT-ZL-HS-19-0 (300 MHz, DMSO, ppm): 10.52 (s, 1H), 8.92 (s, 1H), 8.52 (d, J=4.8 Hz, 1H), 8.09 (m, 2H), 7.95 (m, 1H), 7.76 (d, J=4.8 Hz, 1H), 5.61 (s, 2H).

Provenance & Evidence