The 2-nitro-G-carboxy-2'-methoxydiphenyl was of particular interest since it contained the same 2, 2 ', 6-substituents as were present in 2-nitro-6-carboxy-2', 5'-dimethoxydiphenyl reported by Yuan and Adams. lb The only modification is the elimination of the methoxyl group in the 5l-position of the latter compound. Both products showed exactly the same phenomenon in that merely one alkaloidal salt could be isolated and this showed ...
