“…Reactions of arenecarboxylic acids with dicyclohexylcarbodiimide (DCC) in the presence of a catalyst, such as 1-hydroxybenzotriazole, HOBt, produce N-(arenecarbonyl)-N,N′-dicyclohexylureas (Kaiser et al, 2008;Neves Filho et al, 2007;Schotman, 1991). Several crystal structures of N-(arenecarbonyl)-N,N′-dicyclohexylurea derivatives have been reported (Chérioux et al, 2002;Cai et al, 2009;Dhinaa et al, 2010;Orea Flores et al, 2006;Gallagher et al, 1999;Wang et al, 2008;Wu et al, 2006).…”