2-Chloro-1,1,1-triethoxyethane → 4'-[5-(chloromethyl)-1,3,4-oxadiazol-2-yl]-N-cyclopropyl-6-methyl-1,1'-biphenyl-3-carboxamide

Beteiligte Stoffe

Reaktionsschritte

N-Cyclopropyl-4′-(hydrazinocarbonyl)-6-methyl-1,1′-biphenyl-3-carboxamide (Intermediate 40) (150 mg) in 2-chloro-1,1,1-triethoxyethane (5 ml) was heated at 150° C. for 18 hours. The reaction was applied to a biotage cartridge (silica, 90 g) and eluted with an ethyl acetate/cyclohexane gradient. The product fractions were reduced to dryness under vacuum to give 4′-[5-(chloromethyl)-1,3,4-oxadiazol-2-yl]-N-cyclopropyl-6-methyl-1,1′-biphenyl-3-carboxamide.

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