36646-78-3Relevant articles and documents
Metal-free syntheses of new azocinesviaaddition reactions of enaminones with acenaphthoquinone followed by oxidative cleavages of the corresponding vicinal diols
Arimitsu, Satoru,Genta, Kojya,Mohammadizadeh, Mohammad Reza,Mousavi, S. Hekmat,Poorsadeghi, Samira,Saberi, Dariush
, p. 20552 - 20557 (2020/06/22)
A one-pot, clean and green procedure is described for the syntheses of new azocine derivativesviaaddition reactions of enaminones with acenaphthoquinone followed by periodic acid-mediated oxidative cleavages of the corresponding vicinal diols. Various derivatives of azocine were prepared and well characterized. The excellent yields, simple synthesis procedure, lack of a need to carry out any tedious work-up and column chromatography, metal-free catalysis, and mild reaction conditions are important features of this protocol.
Hypervalent Iodine(III)-Mediated Counteranion Controlled Intramolecular Annulation of Exocyclic β-Enaminone to Carbazolone and Imidazo[1,2-a]pyridine Synthesis
Bhattacherjee, Dhananjay,Ram, Shankar,Chauhan, Arvind Singh,Yamini,Sheetal,Das, Pralay
supporting information, p. 5934 - 5939 (2019/04/08)
A highly efficient and flexible protocol for intramolecular annulation of exocyclic β-enaminones has been disclosed for the synthesis of carbazolones and imidazo[1,2-a]pyridines through a counter-anion-controlled free-radical mechanism promoted by hypervalent iodine(III). The cooperative behavior of HTIB and AgSbF6 plays a crucial role in the intramolecular annulation process through C?C and C?N bond formation to give the desired products. The mechanistic insights suggest that the two competitive reactions involved in the system are guided by the nature of the counteranion, which determines the formation of the final products. A wide variety of carbazolones and imidazo[1,2-a]pyridine molecules have been prepared and isolated in good to excellent yields.
Iodine(III)-Promoted Ring Contractive Cyanation of Exocyclic β-Enaminones for the Synthesis of Cyanocyclopentanones
Bhattacherjee, Dhananjay,Thakur, Vandna,Sharma, Saurabh,Kumar, Sandeep,Bharti, Richa,Reddy, C. Bal,Das, Pralay
supporting information, p. 2209 - 2214 (2017/07/07)
A highly efficient hypervalent iodine-promoted regiocontrolled ring contractive cyanation (RCC) reaction of exocyclic β-enaminones for the synthesis of cyanocyclopentanone (CCP) was demonstrated at ambient temperature with a wide substrate scope. The meth