Sodium Carbonate → HCID 59619365, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of (1R,2R,4R) and (1S,2S,4S)-4-(4-bromo-2-trifluoromethyl-benzenesulfonyl)-2-methoxy-cyclopentanecarboxylic acid (1-cyano-cyclopropyl)-amide (50 mg, 0.1009 mmol, example 58), 1-methylpiperazine (25 μl, 0.252 mmol) and N-ethyl-N,N-diisopropyl amine (36 μl, 0.202 mmol) in DMA (1 ml) was heated in a sealed tube to 100° C. for 5 h. Then additional 1-methylpiperazine (25 μl, 0.252 mmol) was added and heating to 100° C. was continued overnight. The mixture was then cooled to room temperature and diluted with water. The pH was adjusted to 10 by addition of saturated Na2CO3 solution and the mixture was extracted 3 times with EtOAc. The combined organic layers were washed two times with Na2CO3 solution (pH 10) and with brine, dried over Na2SO4 and evaporated. The remaining brown gum was purified by silica gel chromatography (DCM/MeOH 98:2-19:1) to obtain the title compound (35 mg, 67%) as white foam. MS (EI): 515.4 (M+H)+.

Provenance & Evidence