Fe-Catalyzed One-Pot Synthesis of 1,3-Di- and 1,3,5-Trisubstituted Pyrazoles from Hydrazones and Vicinal Diols
作者:Niranjan Panda、Ashis Kumar Jena
DOI:10.1021/jo301770k
日期:2012.10.19
An iron-catalyzed route for the regioselectivesynthesis of 1,3- and 1,3,5-substituted pyrazolesfrom the reaction of diarylhydrazones and vicinal diols has been developed. This method was found to be practical with wide substrate scope.
Orthometallation in bidentate Schiff base ligands via C–H activation: synthesis of ruthenium(III) organometallic complexes
作者:Kaushik Ghosh、Rajan Kumar、Sushil Kumar、Manju Bala、Udai P. Singh
DOI:10.1007/s11243-015-9979-1
日期:2015.11
Abstract Schiff bases obtained by the reactions of substituted aromatic aldehydes with phenyl hydrazine or 2,4-dinitrophenyl hydrazine were synthesized and characterized by spectroscopic methods. Cyclometalated Ru(III) complexes of general formula, namely [Ru(L)(PPh3)2Cl], were synthesized from the Schiff bases via C–H bond activation and characterized by spectroscopic and electrochemical studies.
An Efficient Synthesis of 3,3′,4,4′-Tetrahydro-4,4′-bibenzo[e][1,3]oxazine-2,2′-dione Derivatives with the Aid of Low-valent Titanium
作者:Guolan Dou、Fang Sun、Xuan Zhao、Daqing Shi
DOI:10.1002/cjoc.201180418
日期:2011.11
Synthesis of 3,3′,4,4′‐tetrahydro‐4,4′‐bibenzo[e][1,3]oxazine‐2,2′‐diones via reaction of salicylidendphenylhydrazone and triphosgene with the aid of low‐valent titanium reagent is described. This method has the advantages of accessible starting materials, good yields and short reaction time.
水杨基苯二sal与三光气在低价钛的辅助下合成3,3',4,4'-四氢-4,4'-联苯并[ e ] [1,3]恶嗪-2,2'-二酮描述了试剂。该方法具有原料易得,产率高和反应时间短的优点。
A Convenient One-Pot Conversion of Arene- and Heteroarenecarboxaldehyde Phenylhydrazones into Nitriles via Reaction with<i>N,N</i>-Dimethyldichloromethaniminium Chloride