Title:Synthesis and Characterization of Some New Spirothiadiazole Oxindoles
and their Mannich Bases
Volume: 19
Issue: 12
Author(s): Kooi-Mow Sim*, Pei-Theng Leong, Wai-Sum Wong and Kah-Cheng Teo
Affiliation:
- Department of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat,
31900 Kampar, Perak, Malaysia
Keywords:
1, 2, 4-triazole, isatin, spirothiadiazole oxindole, condensation, mannich base, heterocyclic compound.
Abstract: A series of new spirothiadiazole oxindoles were synthesized by the reaction of 4-amino-5-
mercapto-3-[(1H-indol-3-yl)methyl]-1,2,4-triazole and isatin derivatives. The reaction of spiro [indole]
thiadiazoles with formaldehyde and piperidine afforded the corresponding Mannich bases. The structures
of newly synthesized compounds were characterized by IR, 1D-NMR, 2D-NMR, and LC/MS
spectral data.