The Base‐Promoted Annulation of 2‐Hydrazinyl Pyridine and CO2 toward Triazolones. Issue 21 (26th September 2017)

• Record Type: Journal Article
• Authors: Wu, Xiaopeng; Sun, Song; Wang, Bingbing; Cheng, Jiang
• Is Part Of: Advanced synthesis & catalysis. Volume 359:Issue 21(2017)
• Page Start: 3855
• Page End: 3859
• Publication Date: 2017-09-26
• Subjects: carbon dioxide -- silane -- carbonylation -- annulation -- base-promoted -- triazolones; Catalysis -- Periodicals; Organic compounds -- Synthesis -- Periodicals; Chemistry -- Periodicals; Chemistry, Technical -- Periodicals; Chemistry -- Periodicals; Catalysis -- Periodicals; Technology, Pharmaceutical -- Periodicals; 547.2
• DOI: 10.1002/adsc.201700869
• Languages: English
• ISSNs: 1615-4150

Abstract

Abstract: A base‐promoted annulation of 2‐hydrazinyl pyridine and atmospheric pressure of CO2 has been developed in the presence of silane as reducing reagent, affording a series of triazolones in moderate to excellent yields. CO2 served as a carbonyl source in this transfomation. Moreover, benzamidrazones also worked well under this procedure. Thus, it represents a green, sustainable and straightforward pathway to access triazolone frameworks. Abstract :