1,2-Dimethoxyethane → Pyrimidine-4-carboxamide

Participants

Reaction Conditions

Reaction Steps

A sealed glass vial containing a mixture of 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)-4-(trifluoromethyl)pyridine (182 mg, 0.5 mmol), 6-(1-carbamoyl-ethylamino)-2-chloro-pyrimidine-4-carboxylic acid amide (122 mg, 0.5 mmol), PdCl2(PPh3)2 (28 mg, 0.04 mmol, Aldrich), Cs2CO3 (325 mg, 1 mmol, Aldrich) in a mixed solvent of ethylene glycol dimethyl ether (1 mL), water (1 mL) and ethanol (0.5 mL) was heated at 100° C. for 2 h. After cooling to room temperature, the mixture was diluted with brine (2 mL) and extracted with EtOAc (2×25 mL). The combined organic layers were dried over Na2SO4, filtered, and concentrated on a rotary evaporator. The residue was purified via silica chromatography (0-10% MeOH/CH2Cl2) to give (S)-6-((1-amino-1-oxopropan-2-yl)amino)-2-(4-(4-trifluoromethyl)pyridine-2-yl)oxy)phenyl)pyrimidine-4-carboxamide as white solid, which was further triturated with methanol and dried under vacuum (59 mg, 26%). 1H NMR (400 MHz, DMSO-d6): 8.60 (2H, d, J=8.8 Hz), 8.44 (1H, d, J=5.2 Hz), 8.32 (1H, br), 7.98 (1H, d, J=6.8 Hz), 7.74 (1H, bs), 7.57-7.52 (3H, m), 7.27 (2H, d, J=6.4 Hz), 7.13 (1H, s), 7.02 (1H, bs), 4.59 (1H, m), 1.38 (3H, d, J=7.2 Hz). LC/MS: m/z=447 [M+H]+.

Provenance & Evidence