Highly Substituted Δ
<sup>3</sup>
‐1,2,3‐Triazolines: Solid‐State Emitters with Electrofluorochromic Behavior
作者:Abdusalom A. Suleymanov、Albert Ruggi、Ophélie Marie Planes、Anne‐Sophie Chauvin、Rosario Scopelliti、Farzaneh Fadaei Tirani、Andrzej Sienkiewicz、Alberto Fabrizio、Clémence Corminboeuf、Kay Severin
DOI:10.1002/chem.201901345
日期:2019.5.10
substituted Δ3‐1,2,3‐triazolines can be prepared by reaction of triarylvinyl Grignard reagents with functionalized organic azides. The heterocycles are fluorescent in the solid state, and—depending on the substituents—they can display aggregation‐induced emission. Upon oxidation, the triazolines form stable radical cations with altered photophysical properties. Therefore, they represent rare examples of
One-Pot Synthesis of Trisubstituted Triazenes from Grignard Reagents and Organic Azides
作者:Abdusalom A. Suleymanov、Rosario Scopelliti、Farzaneh Fadaei Tirani、Kay Severin
DOI:10.1021/acs.orglett.8b01214
日期:2018.6.1
and versatile method for the preparation of linear, trisubstituted triazenes is reported. The procedure is based on the reaction of Grignard reagents with 1-azido-4-iodobutane or 4-azidobutyl-4-methylbenzenesulfonate. These organic azides enable the regioselective formation of triazenes via an intramolecular cyclization step. The new method can be used for the preparation of aryl, heteroaryl, vinyl,
A click-based modular approach to introduction of peroxides onto molecules and nanostructures
作者:Alissa Horn、Patrick H. Dussault
DOI:10.1039/d0ra09088c
日期:——
Copper-promoted azide/alkyne cycloadditions (CuAAC) are explored as a tool for modular introduction of peroxides onto molecules and nanomaterials. Dialkyl peroxide-substituted alkynes undergo Cu(I)-promoted reaction with azides in either organic or biphasic media to furnish peroxide-substituted 1,2,3-triazoles. Heterolytic fragmentation of the peroxide to an aldehyde, a side reaction that appears to
Base-Promoted Reactions of Bridged Ketones and 1,3- and 1,4-Haloalkyl Azides: Competitive Alkylation vs Azidation Reactions of Ketone Enolates
作者:Lei Yao、Brenton T. Smith、Jeffrey Aubé
DOI:10.1021/jo0356098
日期:2004.3.1
The reactions of 1,3- and 1,4-haloalkyl azides with enolates of 2-norbornanone (and a ring-expanded analog) afford polycyclic 1,2,3-triazolines in good yields. The reaction occurs by the initial azidation of the ketoneenolate, followed in order by triazoline formation and O-alkylation. An interesting element of this process is the preferential reaction of the alkyl azide with an enolate anion as opposed
effective reagent for carrying out photolytically initiated radicalallylationreactions, as also proved by EPR experiments. In the presence of suitable azides that can give rise to electrophilic radicals, a homolytic chain reaction occurs with formation of allylated compounds. With δ-azido esters and chlorides generation of primary indiumaminyl radicals is followed by a very efficient 1,5-H shift process