6092-71-3Relevant articles and documents
α-Nitrosostyrenes as Three-Atom Units for the (3+1) Cyclization Reaction: Facile Access to 2,3-Dihydrodiazete N-Oxides and Their Diversified Synthetic Conversions
Shen, Li-Wen,Wang, Zhen-Hua,You, Yong,Yuan, Wei-Cheng,Zhao, Jian-Qiang,Zhou, Ming-Qiang
supporting information, p. 1094 - 1099 (2022/02/10)
An unprecedented (3+1) cyclization of α-nitrosostyrenes, generated in situ from α-bromooximes, and N-tosyloxycarbamates was developed, which enables the synthesis of a range of structurally unique and hitherto unexplored 2,3-dihydrodiazete N-oxides in mod
Photocatalytic Intramolecular C-H Amination Using N-Oxyureas as Nitrene Precursors
Ivanovich, Ryan A.,Polat, Dilan E.,Beauchemin, André M.
supporting information, p. 6360 - 6364 (2020/09/02)
Nitrenes are remarkable high-energy chemical species that enable direct C-N bond formation, typically via controlled reactions of metal-stabilized nitrenes. Here, in contrast, the combined use of photocatalysis with careful engineering of the precursor enabled C-H amination forming imidazolidinones and related nitrogen heterocycles from readily accessible hydroxylamine precursors. Preliminary mechanistic results are consistent with the formation of free carbamoyl triplet nitrenes as reactive intermediates.
Regioselective Synthesis of 2-Vinylanilines Using O-aroyloxycarba-mates by Sequential Decarboxylation/Amination/Heck Reaction
Li, Peihe,Ma, Nuannuan,Li, Jikun,Wang, Zheng,Dai, Qipu,Hu, Changwen
, p. 8251 - 8257 (2017/08/14)
A new sequential approach for 2-vinylanilines utilizing aryl carboxylic acids as stable, inexpensive and widely available arylating reagents is described. Employing a Pd-POVs catalyst system, this protocol is not only overcoming the restriction barrier of decarboxylative coupling to ortho-substituted substrates, but also provides site-special to create new C(sp2)-N and C(sp2)-C(sp2) bonds. Mechanistic experiments suggest the cleavage of C(sp2)-COOH gives priority to C(sp2)-X bond in this reaction.