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http://dx.doi.org/10.1016/j.ica.2003.07.001

has been cited by the following article:

• TITLE: New Schiff Bases from 6,6’-Diformyl-2,2’-Bipyridyl with Amines Containing O, S, N and F: Synthesis and Characterization

  AUTHORS: Md. Razzak, Mohammad R. Karim, Md. Rejaul Hoq, Aminul H. Mirza

  KEYWORDS: 2, 2’-Bipyridyl, Schiff Base, O, N, S and F Containing Amines, 6, 6’-Diformyl

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.5 No.4, December 16, 2015

  ABSTRACT: Eight novel Schiff Bases, from 6,6′-diformyl-2,2′-bipyridyl (1a, 43%)with O, N, S and F containing amines: Thiosemicarbazide (2a, 70%), 4-Ethyl-3-thiosemicabazide (2b, 75%), 4,4-Dimethyl-3-thio-semicarbazide (2c, 75%), S-benzyldithiocarbazide, SBDTC (2d, 80%), (Trifluromethyl) phenylhy-drazine (2e, 80%), 4-Phenyl-3-thiosemcarbazide (2f, 80%), Thiocarbazide (2g, 70%), 2-Amino-thiophenol (2h, 65%), have been synthesized. The conventional method of synthesis of the Schiff bases involves refluxing the reaction mixture containing the diformyls and amines for 1 hour. The solid products that had formed were filtered off using suction filtration. In few reactions, 2 - 3 drops of conc. sulfuric acid were used to obtain high yield. The structures of all eight novel synthesized compounds have fully been characterized by spectroscopic (IR, NMR, MS) methods.