tert.butyl 4'-[[2-n-propyl-4-methyl-6-(4,4-dimethyl-oxazolin-2-yl)-1H-benzimidazol-1-yl]-methyl]-biphenyl-2-carboxylate 在
三氟乙酸 作用下,
以60%的产率得到4'-[[2-n-propyl-4-methyl-6-(4,4-dimethyl-oxazolin-2-yl)-1H-benzimidazol-1-yl]-methyl]-biphenyl-2-carboxylic acid-di-trifluoroacetate