Results 11 to 20 of about 18,930 (288)

Synthesis of Polysubstituted N-H Pyrroles from Vinyl Azides and 1,3-Dicarbonyl Compounds

open access: yes, 2016
Two synthetic methods for tetra- and trisubstituted N-H pyrroles are presented:  (i) the thermal pyrrole formation by the reaction of vinyl azides with 1,3-dicarbonyl compounds via the 1,2-addition of 1,3-dicarbonyl compounds to 2H-azirine intermediates ...
Guillaume Lapointe (2168788)   +3 more
core   +6 more sources

Taming Unhindered Alkyl Azides by Intramolecular Hydrogen-Azide Interaction for Discriminative Conjugation onto Alkyl Diazides [PDF]

open access: yes, 2021
We report herein the unique reactivities of α-azido secondary acetamides (α-AzSAs) as minimal and unhindered azide structures. The NH–azide interaction in the α-AzSAs, supposed by DFT calculation, allowed selective conjugation in the presence of other ...
Koshiro, Maegawa   +5 more
core   +2 more sources

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

open access: yesMolecules, 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   +3 more
doaj   +1 more source

Allylic Azides: Versatile Building Blocks to Heterocycles [PDF]

open access: yes, 2021
University of Minnesota Ph.D. dissertation. May 2021. Major: Chemistry. Advisor: Joseph Topczewski. 1 computer file (PDF); x, 99 pages + 1 supplementary file.Organic azides are versatile building blocks because they can be derivatized to a variety of ...
Liu, En-Chih
core  

TfNN15N: A γ-15N‑Labeled Diazo-Transfer Reagent for the Synthesis of β-15N‑Labeled Azides

open access: yes, 2021
Azides are infrared (IR) probes that are important for structure and dynamics studies of proteins. However, they often display complex IR spectra owing to Fermi resonances and multiple conformers.
Minhaeng Cho   +7 more
core   +1 more source

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

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   +1 more source

Recent Applications and Developments of Organic Azides in Total Synthesis of Natural Products

open access: yesNatural Product Communications, 2013
Organic azides have been exploited since their discovery because of their high reactivities. Various organic reactions using azides have been synthetically applied in chemical biology pharmaceuticals medicinal and agricultural areas.
Hiroki Tanimoto, Kiyomi Kakiuchi
doaj   +1 more source

EPR and pulsed ENDOR study of intermediates from reactions of aromatic azides with group 13 metal trichlorides

open access: yesBeilstein Journal of Organic Chemistry, 2010
The reactions of group 13 metal trichlorides with aromatic azides were examined by CW EPR and pulsed ENDOR spectroscopies. Complex EPR spectra were obtained from reactions of aluminium, gallium and indium trichlorides with phenyl azides containing a ...
Giorgio Bencivenni   +4 more
doaj   +1 more source

Overview of 1,5-Selective Click Reaction of Azides with Alkynes or Their Synthetic Equivalents

open access: yesMolecules, 2023
Nowadays, the click reaction of azides with alkynes has evolved rapidly and become one of the most efficient methods to synthesize 1,2,3-triazoles, which are an important class of N-containing heterocycles.
Yaqi Zhao   +3 more
doaj   +1 more source

TfNN15N: A -15NLabeled Diazo-Transfer Reagent for the Synthesis of -15NLabeled Azides

open access: yes, 2021
Azides are infrared (IR) probes that are important for structure and dynamics studies of proteins. However, they often display complex IR spectra owing to Fermi resonances and multiple conformers.
Hyeok-Jun Kwon   +9 more
core   +1 more source

Home - About - Disclaimer - Privacy