The syntheses and properties of a series of 4,4′-thenylidene bis[N,N-dimethylaniline] compounds, variously substituted in the thiophene ring, are reported. These compounds were tested as redox indicators in the Schoenemann reaction for the detection of phosphonofluoridate esters in solution. The most effective indicator was 4,4′(5-methyl-4-propyl-2-thenylidene)bis[N,N-dimethylaniline]
报道了一系列在噻吩环中不同取代的4,4'-亚乙基双[N,N-二甲基苯胺]化合物的合成和性质。这些化合物被用作Schönenmann反应中检测溶液中磷酸氟酯酯的氧化还原指示剂。其中最有效的指示剂是4,4'(5-甲基-4-丙基-2-亚乙基)双[N,N-二甲基苯胺]。