Catalytic Acceptorless Dehydrogenative Coupling of Arylhydrazines and Alcohols for the Synthesis of Arylhydrazones
作者:Feng Li、Chunlou Sun、Nana Wang
DOI:10.1021/jo501161u
日期:2014.9.5
The direct synthesis of arylhydrazones via catalytic acceptorless dehydrogenative coupling of arylhydrazines and alcohols has been accomplished. More importantly, complete selectivity for arylhydrazones and none of the N-alkylated byproducts were generated in this process, which exhibit new potential and provide a new horizon for the development of catalytic acceptorless dehydrogenative coupling reactions
An ammonium persulfate mediated thiocyanation reaction of aldehyde‐derived hydrazones that affords 5‐thioxo‐1,2,4‐triazoliuminnersalts has been developed. The operational simplicity, mild and metal‐free reaction conditions performed at ambient temperature, wide functional group tolerance, and scalability of the process are key features of this method.