Results 11 to 20 of about 71,291 (332)

Divergent synthesis of chiral cyclic azides via asymmetric cycloaddition reactions of vinyl azides

Nature Communications, 2019
Vinyl azides generally act as 3-atom synthon through the fast release of molecular nitrogen, whereas keeping the azide group intact is more challenging. Here, the authors show a copper-catalyzed enantioselective cycloaddition of two types of vinyl azides
Nuligonda Thirupathi, Fang Wei, Chen-Ho Tung, Zhenghu Xu   +3 more
doaj   +2 more sources

Linking of Alcohols with Vinyl Azides

Organic Letters, 2016
A protocol to link alcohols with vinyl azides has been established through fluoro- or bromo-alkoxylation of vinyl azides to provide α-alkoxy-β-haloalkyl azides.
Bengang Xing (1597777), Xing, Bengang, Hirohito Hayashi (2338792), Shunsuke Chiba (1670473), Hayashi, Hirohito, Ming Hu (38573), Yi-Feng Wang (529972), Hu, Ming, Wang, Yi-Feng, Chiba, Shunsuke   +9 more
core   +2 more sources

α-Substituted vinyl azides: An emerging functionalized alkene

Chemical Society Reviews, 2017
Vinyl azides are highly versatile synthons that provide access to numerous N-heterocycles and other functional groups. a-Substituted vinyl azides (azido vinylidenes) are a special class that display unique reactivity, able to react not only as azides ...
Xihe Bi, Fu, Junkai, Anderson, Edward, Zanoni, Giuseppe, Junkai Fu, Bi, Xihe, Edward A. Anderson, Zanoni, G, Fu, J, Anderson, Edward A., Giuseppe Zanoni, Bi, X   +11 more
core   +2 more sources

Acyl Azides: Versatile Compounds in the Synthesis of Various Heterocycles­

Synthesis, 2018
Carbon–nitrogen bond formation is one of the most important reactions in organic chemistry. Various synthetic strategies for the generation of C–N bonds are described in the literature. For example, primary amines can be easily synthesized by the thermal
Balcı, Metin, BALCI, METİN, Metin Balci   +2 more
core   +2 more sources

Metalloradical activation of carbonyl azides for enantioselective radical aziridination

Chem, 2021
The bigger picture Organic azides have been increasingly employed as nitrogen sources for catalytic olefine aziridination due to their ease of preparation and generation of benign N2 as the only byproduct.
Xavier Riart-Ferrer, Peng Sang, J. Tao, Hao Xu, Li-Mei Jin, Hongjian Lu, X. Cui, L. Wojtas, X. Zhang   +8 more
semanticscholar   +1 more source

Synthesis of β-Difluoroalkyl Azides via Elusive 1,2-Azide Migration

Chem, 2020
Summary The development of azide migration reactions is a formidable challenge because of the potential competition of side processes driven by the release of molecular nitrogen.
Yongquan Ning, P. Sivaguru, G. Zanoni, E. Anderson, X. Bi   +4 more
semanticscholar   +1 more source

Synthesis of 1,2,3-triazoles using Grignard reactions through the protection of azides

Frontiers in Chemistry, 2023
An efficient method to prepare organomagnesium intermediates having a protected azido group is reported. Protection of azido groups with di-(tert-butyl)(4-(dimethylamino)phenylphosphine (amphos) and following iodine–magnesium exchange realized the ...
Rina Namioka, Minori Suzuki, Minori Suzuki, Suguru Yoshida   +3 more
doaj   +1 more source

ChemInform Abstract: Chemical Activation in Azide and Nitrene Chemistry: Methyl Azide, Phenyl Azide, Naphthyl Azides, Pyridyl Azides, Benzotriazoles, and Triazolopyridines [PDF]

ChemInform, 2013
AbstractReview: more than 100 refs.
openaire   +2 more sources

Regioselective synthesis of heterocyclic N-sulfonyl amidines from heteroaromatic thioamides and sulfonyl azides

Beilstein Journal of Organic Chemistry, 2020
N-Sulfonyl amidines bearing 1,2,3-triazole, isoxazole, thiazole and pyridine substituents were successfully prepared for the first time by reactions of primary, secondary and tertiary heterocyclic thioamides with alkyl- and arylsulfonyl azides.
Vladimir Ilkin, Vera Berseneva, Tetyana Beryozkina, Tatiana Glukhareva, Lidia Dianova, Wim Dehaen, Eugenia Seliverstova, Vasiliy Bakulev   +7 more
doaj   +1 more source

Synthesis of Chromium(II) Complexes with Chelating Bis(alkoxide) Ligand and Their Reactions with Organoazides and Diazoalkanes

Molecules, 2020
Synthesis of new chromium(II) complexes with chelating bis(alkoxide) ligand [OO]Ph (H2[OO]Ph = [1,1′:4′,1′’-terphenyl]-2,2′’-diylbis(diphenylmethanol)) and their subsequent reactivity in the context of catalytic ...
Sudheer S. Kurup, Richard J. Staples, Richard L. Lord, Stanislav Groysman   +3 more
doaj   +1 more source