反应详情

The title compound was prepared in analogy to Example 4, intermediate, from 2-[2-(4-chloro-phenyl)-5,6-difluoro-benzoimidazol-1-yl]-2-cyclohexyl-ethanol (Ex. 1, int. c), and 3-chloro-5-fluoro-4-hydroxy-benzoic acid methyl ester (CAS RN 369-15-3) and replacing di-ethyl azodicarboxylate by di-tert-butyl azodicarboxylate. The residue was purified by silica gel chromatography using a MPLC system (CombiFlash Companion, Isco Inc.) eluting with a gradient of n-heptane:ethyl acetate (100:0 to 70:30) to give the desired compound as a colorless foam (74%). MS (Turbo Spray): 577.1 [M+H].

1. customThe residue was purified by silica gel chromatography
2. washeluting with a gradient of n-heptane:ethyl acetate (100:0 to 70:30)