Access to 3-Amino-[1,2,4]-triazolo Pyridines and Related Heterocycles via Electrochemically Induced Desulfurative Cyclization
作者:Yunfei Hu、Li Chen、Canlin Zou、Jiangtao He、Luanqi Feng、Jia-Qiang Wu、Wen-Hua Chen、Jinhui Hu
DOI:10.1021/acs.orglett.2c01968
日期:2022.7.22
An efficient, one-pot approach has been established for synthesizing a wide range of 3-amino-[1,2,4]-triazolo pyridines and related heterocycles from the electrochemically induced desulfurative cyclization of 2-hydrazinopyridines with isothiocyanates. The protocol allows for the formation of C–N bonds under simple conditions without transition metals or external oxidants. The practicability of this
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
通过将芳基肼加到异硫氰酸酯中,然后进行I 2介导的氧化环脱硫,合成了多种稠合的3-氨基-1,2,4-三唑衍生物。这种无过渡金属的合成方法可轻松,高效地从容易获得的底物中轻松获得1,2,4-三唑并[4,3- a ]吡啶和带有3-氨基取代基的相关杂环骨架。