Journal of Chemical Research p. 557 - 565 (2020)
Update date:2022-08-11
Topics:
Geng, Zhenzhen
Zhang, Hong-Yu
Yin, Guohui
Zhang, Yuecheng
Zhao, Jiquan
The ionic liquid 1-methyl-3-(3-sulfopropyl)imidazolium chloride ([MIMPs]+Cl-) in combination with 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) and sodium nitrite (NaNO2) as a catalytic system demonstrates high efficiency in the one-pot two-step aerobic oxidative condensation of benzyl alcohols with 1,2-phenylenediamines to give benzimidazoles. Various benzimidazoles are obtained in good to excellent yields by this strategy.
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