Diisopropylethylamine → rac-8-[(3,3-Difluorocyclobutyl)methoxy]-2,6-dimethyl-N-(7,7,7-trifluoro-2-hydroxy-2-methylheptan-3-yl)imidazo[1,2-a]pyridine-3-carboxamide

Participants

Reaction Steps

100 mg (0.32 mmol) of 8-[(3,3-difluorocyclobutyl)methoxy]-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxylic acid Example 107A and 135 mg (0.35 mmol) of HATU were initially charged in 2 ml of DMF. 0.16 ml (0.96 mmol) of N,N-diisopropylethylamine and 70.6 mg (0.354 mmol) of rac-3-amino-7,7,7-trifluoro-2-methylheptan-2-ol hydrochloride Example 103A were then added, and the mixture was stirred at RT overnight. 7 ml of water were added, and the reaction solution was extracted twice with 15 ml of ethyl acetate. The combined organic phases were washed with 15 ml of water and with 10 ml of saturated aqueous sodium chloride solution, dried over magnesium sulphate, filtered and concentrated. The residue was purified by preparative RP-HPLC (acetonitrile-water+0.1% formic acid) and the product fractions were combined and concentrated to dryness. This gave 86 mg of the target compound (55% of theory).

Provenance & Evidence