Add time:08/04/2019 Source:sciencedirect.com
A variety of fused 3-amino-1,2,4-triazole derivatives were synthesized via addition of aryl hydrazines to isothiocyanates followed by I2-mediated oxidative cyclodesulfurization. This transition-metal-free synthetic process provides facile access to 1,2,4-triazolo[4,3-a]pyridines and related heterocyclic frameworks bearing a 3-amino substituent from readily accessible substrates in an efficient and scalable fashion.
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