Efficient eco-friendly syntheses of dithiocarbazates and thiosemicarbazones
| Autor: | Aminul Huq Mirza, Malai Haniti S. A. Hamid, Hajar Azirah Adol, Mohammad R. Karim, Nur Halilatul Sadiqin Omar Ali, Anwar Usman, Tasneem A. Siddiquee, Md. Rejaul Hoq, Nurul Amirah ‘Aqilah Mohamad ‘Asri Putra |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010405 organic chemistry
thiosemicarbazones schiff bases dithiocarbazates 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology 01 natural sciences Environmentally friendly 0104 chemical sciences lcsh:Chemistry chemistry.chemical_compound crystal structures Salicylaldehyde chemistry lcsh:QD1-999 eco-friendly synthesis Environmental Chemistry Organic chemistry lcsh:Q 0210 nano-technology lcsh:Science |
| Zdroj: | Green Chemistry Letters and Reviews, Vol 13, Iss 2, Pp 129-140 (2020) |
| ISSN: | 1751-7192 1751-8253 |
| Popis: | Eight Schiff bases have been synthesized by conventional and three different eco-friendly methods, whereby two aromatic carbonyl compounds viz. 2-thiophenecarboxaldehyde and salicylaldehyde were reacted with S-methyl, S-benzyl, and S-n-octyl-dithiocarbazates and thiosemicarbazide. In order to evaluate the efficiency of the synthesis methods, the time to complete the reaction and the yield of the Schiff base synthezised by eco-friendly methods, such as solvent-free grinding, water as a solvent, and lemon juice as catalyst, were compared with those synthesized by the conventional method. The chemical structures of all the synthesized Schiff bases, where two of them are novel and reported for the first time, were fully characterized by a variety of physico-chemical, analytical, and spectroscopic techniques. The molecular and crystal structures of the Schiff bases especially those having 2-thiophene moiety were further elucidated by single crystal X-ray diffraction analyzes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|