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S. J. Benkovic, T. H. Barrows and P. R. Farina, “Studies on Models for Tetrahydrofolic Acid. IV. Reactions of Amines with Formamidinium Tetrahydroquinoxaline Analogs,” Journal of the American Chemical Society, Vol. 95, No. 25, 1973, pp. 8414-8420.

has been cited by the following article:

• TITLE: An Efficient FeCl3 Catalyzed Synthesis of N,N’-Diarylformamidines

  AUTHORS: Pushkin Chakraborty, Subhas C. Roy

  KEYWORDS: Fe(III) Chloride; Diarylformamidines; Aryl Amines; Triethylorthoformate

  JOURNAL NAME: Green and Sustainable Chemistry, Vol.3 No.1, February 26, 2013

  ABSTRACT: An efficient FeCl3 catalyzed synthesis of N,N’-diarylformamidines using triethylorthoformate (1 equivalent) and primary aryl amines (2 equivalents) at ambient temperature has been described. This methodology provides an eco-friendly and simple procedure without using any hazardous and expensive chemicals.