Dichloromethane → HCID 58027417, compound

Participants

Reaction Steps

Analogous to the general method described in J. Med. Chem., (2005), 48(6), 2134-2153. To a flask containing 2-methylthiazole-4-carboxylic acid (1.10 g, 7.68 mmol) was added DCM (30 mL) and the homogeneous solution was stirred at room temperature as carbonyldiimidazole (1.30 g, 8.02 mmol) was added. A white opaque suspension resulted. After the mixture was stirred at room temperature for 2.25 hours a colorless homogeneous solution resulted and then N,O-dimethylhydroxylamine hydrochloride (820 mg, 8.41 mmol) was added which caused an opaque solution to result once again. The mixture was stirred at room temperature for 18 hours, then diluted with water and 1 N NaOH (to pH ˜9) and extracted with DCM (4×50 mL). The combined organics were washed with brine, dried over Na2SO4, filtered and concentrated to give a colorless oil, which was passed through a plug of silica gel eluting with (20% THF-DCM) to provide the title compound as a colorless oil.

Provenance & Evidence