Author(s)

Abdul Azim Jambol¹, Malai Haniti Sheikh Abdul Hamid^1*, Aminul Huq Mirza¹, Md. Shafiqul Islam², Mohammad Rezaul Karim²

¹Chemical Sciences, Faculty of Science, Universiti Brunei Brunei Darussalam, Bandar Seri Begawan, Brunei Darussalam.
²Department of Chemistry, Tennessee State University, Nashville, USA.

Four Schiff bases, from pyruvic acid (1) with amines containing N and S donor atoms, thiocarbohydrazide (2, 61%), 2-methyl-3-thiosemicarbazide (3, 26%), S-benzyldithiocarbazate (4, 51%) and S-n-octyldithiocarbazate (5, 63%) have been successfully synthesized. The conventional method was used and a series of novel linear and cyclic Schiff bases were obtained with or without catalyst. All the Schiff bases were fully characterized by CHN elemental analysis, FT-IR, ¹H & ¹³C NMR, EI-MS and two of the Schiff bases were further characterized by X-ray crystallographic structure analysis. Compound 2 crystallizes in the triclinic space group P-1 and unit cell dimensions are: a = 4.1777(8), b = 5.9538(11), c = 13.458(3) Å, α = 92.759(6), β = 90.813(6), γ = 100.040(6)°, R₁ = 0.0439. Compound 3 crystallizes in the orthorhombic space group P n a 2(1) and unit cell dimensions are: a = 5.5992(2), b = 11.3962(5), c = 10.6473(5), α = 92.759(6), β = 90.813(6), γ = 100.040(6)°, R₁ = 0.0285. Compounds 2 and 3 were obtained as cyclic Schiff bases which are triazine derivatives.

Pyruvic Acid Schiff Bases, Thiocarbohydrazide, S-Alkyldithiocarbazates, Thiosemicarbazide, Triazine, N and S Containing Amines

Jambol, A. , Hamid, M. , Mirza, A. , Islam, M. and Karim, M. (2017) Some Novel Schiff Bases from Pyruvic Acid with Amines Containing N & S Donor Atoms: Synthesis, Spectral Studies and X-Ray Crystal Structures. International Journal of Organic Chemistry, 7, 42-56. doi: 10.4236/ijoc.2017.71005.