Results 1 to 10 of about 5,796 (152)

Divergent synthesis of chiral cyclic azides via asymmetric cycloaddition reactions of vinyl azides [PDF]

open access: yesNature 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   +3 more
doaj   +5 more sources

Electrochemically Induced Synthesis of Imidazoles from Vinyl Azides and Benzyl Amines [PDF]

open access: yesMolecules, 2022
An electrochemically induced synthesis of imidazoles from vinyl azides and benzyl amines was developed. A wide range of imidazoles were obtained, with yields of 30 to 64%.
Vera A. Vil’   +2 more
doaj   +2 more sources

Vinyl azides in organic synthesis: an overview. [PDF]

open access: yesRSC Adv, 2023
This review focuses on the application of vinyl azide in organic synthesis and highlights new strategies and methods using this compound to produce heterocycles and other organic compounds.
Gholami F   +3 more
europepmc   +3 more sources

A sustainable strategy for the straightforward preparation of 2H-azirines and highly functionalized NH-aziridines from vinyl azides using a single solvent flow-batch approach [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2021
The reported flow-batch approach enables the easy preparation of 2H-azirines and their stereoselective transformation into highly functionalized NH-aziridines, starting from vinyl azides and organolithium compounds.
Michael Andresini   +2 more
doaj   +2 more sources

[3 + 2]-Cycloadditions of nitrile ylides after photoactivation of vinyl azides under flow conditions [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2013
The photodenitrogenation of vinyl azides to 2H-azirines by using a photoflow reactor is reported and compared with thermal formation of 2H-azirines. Photochemically, the ring of the 2H-azirines was opened to yield the nitrile ylides, which underwent a [3
Stephan Cludius-Brandt   +2 more
doaj   +2 more sources

Multistep flow synthesis of vinyl azides and their use in the copper-catalyzed Huisgen-type cycloaddition under inductive-heating conditions [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2011
The multistep flow synthesis of vinyl azides and their application in the synthesis of vinyltriazoles is reported. The synthesis relies on a stable polymer-bound equivalent of iodine azide that serves to carry out 1,2-functionalization of alkenes in a ...
Lukas Kupracz   +4 more
doaj   +2 more sources

Vinyl-aza-[3]cumulene intermediates induced polymerization for accessing E-dienyl poly(sulfonylamidines) towards pH-responsive drug delivery [PDF]

open access: yesNature Communications
The development of reactive intermediates is very significant to construct functional compounds and polymers for multicomponent reactions and multicomponent polymerizations. Heterocumulenes as unique intermediates could be used for the rapid construction
Xuejian Li   +3 more
doaj   +2 more sources

Catalyst-Free Synthesis of 2,4-Disubstituted‑1H‑imidazoles through [3 + 2] Cyclization of Vinyl Azides with Amidines [PDF]

open access: yesACS Omega, 2017
N. Naresh Kumar Reddy   +3 more
doaj   +2 more sources

Linking of Alcohols with Vinyl Azides [PDF]

open access: yesOrganic 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. A series of primary and secondary alcohols including natural products and their derivatives such as sugars and steroids were successfully anchored with vinyl azides. The as-prepared cyanine dye
Wang, Yi-Feng   +4 more
openaire   +3 more sources

Chemodivergent photocatalytic access to 1-pyrrolines and 1-tetralones involving switchable C(sp3)–H functionalization

open access: yesFrontiers in Chemistry, 2022
A chemodivergent photocatalytic approach to 1-pyrrolines and 1-tetralones from alkyl bromides and vinyl azides has been developed through chemoselectively controllable intermolecular [3 + 2] and [4 + 2] cyclization.
Shijing Tu   +9 more
doaj   +1 more source

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