Diisopropylethylamine → HCID 178425729, compound

Participants

Reaction Steps

A mixture of trans-8-chloro-1-[4-(6-methyl-pyridin-2-yloxy)-cyclohexyl]-5,6-dihydro-4H-2,3,5,10b-tetraaza-benzo[e]azulene (0.10 g, 0.24 mmol) and N,N-diisopropylethylamine (0.080 ml, 0.49 mmol) in dichloromethan (1 ml) was treated with trifluoro-methanesulfonic acid 2,2-difluoro-ethyl ester (63 mg, 0.29 mmol) at 0° C. The cooling bath was removed after 30 min. and the reaction mixture was stirred at room temperature over night. The mixture was partitioned between aqueous saturated ammonium chloride solution (50 ml) and ethyl acetate (50 ml). The aqueous layer was extracted with one 50-ml portion of ethyl acetate. The combined organic layers were washed with two 50-ml portions of a 1 M aqueous solution of sodium carbonate. The aqueous layers were each extracted with one 50-ml portion of ethyl acetate. The organic layers were dried over anhydrous sodium sulfate and concenrated in vacuo. Purification by flash column chromatography gave the title compound (98 mg, 85%) as white solid.

Provenance & Evidence