21874-06-6Relevant academic research and scientific papers
Iridium-Catalyzed α-Selective Arylation of Styrenes by Dual C?H Functionalization
Cooper, Phillippa,Crisenza, Giacomo E. M.,Feron, Lyman J.,Bower, John F.
supporting information, p. 14198 - 14202 (2018/10/02)
An IrI-system modified with a ferrocene derived bisphosphine ligand promotes α-selective arylation of styrenes by dual C?H functionalization. These studies offer a regioisomeric alternative to the Pd-catalyzed Fujiwara–Moritani reaction.
Tert -Butyl nitrite (TBN) as the N atom source for the synthesis of substituted cinnolines with 2-vinylanilines and a relevant mechanism was studied
Pang, Xiaobo,Zhao, Lianbiao,Zhou, Dagang,He, Ping Yong,An, Zhenyu,Ni, Ji Xiang,Yan, Rulong
, p. 6318 - 6322 (2017/08/10)
A green method to synthesize cinnolines by 6π electrocyclic reaction with alkenyl amines and TBN has been developed. TBN plays a dual role both as a nitrogen atom source and an oxidant in this procedure. Relevant mechanism experiments reveal that the reaction proceeds through electrocyclic reaction and with diazo hydroxide as a key intermediate.
Pd-assisted cross-coupling reactions with 4-chlorocinnoline
Heiter, Helmut Julian,Vilkauskaite, Gyte,Holzer, Wolfgang
, p. 141 - 144 (2013/03/13)
A series of 4-ethynylcinnolines 3a-e was prepared by Sonogashira reaction of 4-chlorocinnoline (1) with appropriate alkynes. Moreover, Suzuki coupling of with boronic esters gave the corresponding 4-arylcinnolines 5a-c. Detailed NMR spectroscopic data including unambiguous chemical shift assignments of all 1H, 13C, and 15N resonances of the obtained cinnoline derivatives are reported.
Copper-catalyzed tandem C-N bond formation: An efficient annulative synthesis of functionalized cinnolines
Ball, Catherine J.,Gilmore, Jeremy,Willis, Michael C.
, p. 5718 - 5722 (2012/08/14)
Cinn-tillating synthesis: The combination of a readily available copper catalyst, a simple hydrazide nucleophile, and established difunctionalized building blocks provides a new, flexible route to an under-developed class of aromatic heterocycles, cinnolines (see scheme). Copyright
Dirhodium(II)-catalyzed intramolecular C-H amination of aryl azides
Shen, Meihua,Leslie, Brooke E.,Driver, Tom G.
supporting information; experimental part, p. 5056 - 5059 (2009/03/11)
(Chemical Equation Presented) Azides to indoles: Dirhodium(II)-catalyzed decomposition of aryl azides was developed as a mild, functional group tolerant method for the synthesis of indoles (see scheme).
Aromatic Diazonium Salts, X. - A One-Pot Procedure for the Jacobson Synthesis of Indazole
Ruechardt, Christoph,Hassmann, Volker
, p. 908 - 927 (2007/10/02)
Procedures are described for a one-pot synthesis of 1H-indazole and substituted indazoles 3 in good yield (Table 1) from o-toluidines 2, alkyl nitrite or nitrous oxides, potassium acetate, and acetic anhydride in benzene.The spectroscopic properties of substituted indazoles (Tables 2-4) are discussed. - 4-Phenylcinnoline (18) is prepared by the same procedure from o-(α-methylenebenzyl)aniline.
