The goal of this PhD was to explore a new synthetic protocol for the synthesis, resolution and late stage functionalization of cationic [6]helicenes. The replacement of oxygen by nitrogen atom at bridge position is favorable due to the better charge stabilization brought by the electron-donating groups. The transformation from dioxa into azaoxa and diaza [6]helicenes is achieved in milder conditions. The enantiomers of the cationic [6]helicenes were separated using CSP-HPLC conditions in neutral or cationic derivatives and their chiroptical properties and racemization barriers were studied. In addition, an oxidative coupling between the more electrophilic dioxa [6]helicene and indoles or indoline was achieved on the naphthyl rings. This reg...
During the last decades, helicenes gained a considerableamount of attention, and not only from synth...
Helicenes are ortho-condensed polycyclic aromatic or heteroaromatic compounds with inherent chiralit...
Des composés [6]hélicènes cationiques facilement différentiables par la nature des hétéroatomes incl...
A straightforward approach to the synthesis of two different series of cationic [5]helicenes has bee...
The physicochemical properties of cationic dioxa (1), azaoxa (2), and diaza (3) [6]helicenes demonst...
Pick and choose: Novel cationic diaza-, azaoxo-, and dioxo[6]helicenes are readily prepared and func...
A straightforward approach to the synthesis of two different series of cationic [5]helicenes has bee...
Unprecedented regioselective post-functionalization of racemic and enantiopure cationic diaza [4]hel...
This PhD was focused in the reactivity and the study of (chir)optical properties of DMQA and DAOTA s...
In 2016, as a basis of this PhD dissertation, our group published a study reporting the late-stage r...
Oxygen atoms of cationic dioxa and azaoxa [6]helicenes can be exchanged by amino groups to form azao...
Helicenes are ortho-condensed polycyclic aromatic or heteroaromatic compounds with inherent chiralit...
Several synthetic protocols were explored for the optimization of the synthesis of mono- and diaza[6...
Cationic helicenes are ortho-fused polyaromatics which exhibit well-defined and stable helical confo...
The intramolecular condensation of ortho substituents of triaryl carbenium ions can lead to the form...
During the last decades, helicenes gained a considerableamount of attention, and not only from synth...
Helicenes are ortho-condensed polycyclic aromatic or heteroaromatic compounds with inherent chiralit...
Des composés [6]hélicènes cationiques facilement différentiables par la nature des hétéroatomes incl...
A straightforward approach to the synthesis of two different series of cationic [5]helicenes has bee...
The physicochemical properties of cationic dioxa (1), azaoxa (2), and diaza (3) [6]helicenes demonst...
Pick and choose: Novel cationic diaza-, azaoxo-, and dioxo[6]helicenes are readily prepared and func...
A straightforward approach to the synthesis of two different series of cationic [5]helicenes has bee...
Unprecedented regioselective post-functionalization of racemic and enantiopure cationic diaza [4]hel...
This PhD was focused in the reactivity and the study of (chir)optical properties of DMQA and DAOTA s...
In 2016, as a basis of this PhD dissertation, our group published a study reporting the late-stage r...
Oxygen atoms of cationic dioxa and azaoxa [6]helicenes can be exchanged by amino groups to form azao...
Helicenes are ortho-condensed polycyclic aromatic or heteroaromatic compounds with inherent chiralit...
Several synthetic protocols were explored for the optimization of the synthesis of mono- and diaza[6...
Cationic helicenes are ortho-fused polyaromatics which exhibit well-defined and stable helical confo...
The intramolecular condensation of ortho substituents of triaryl carbenium ions can lead to the form...
During the last decades, helicenes gained a considerableamount of attention, and not only from synth...
Helicenes are ortho-condensed polycyclic aromatic or heteroaromatic compounds with inherent chiralit...
Des composés [6]hélicènes cationiques facilement différentiables par la nature des hétéroatomes incl...