The electrochemical intramolecular cyclization of propargyl derivatives containing a carbon–halogen bond in N,N’-dimethylformamide at constant current in a diaphragmless cell has been developed using Ni(II) complexes as electron-transfer mediators.

The first Ni-catalysed alkene isomerization of allylamides for the synthesis of enamides was demonstrated. Various substituted N-allylamides were found to be suitable substrates for this isomerization. Isotopic labelling experiments showed that it is an intramolecular hydrogen transfer process.

Aggregation-induced emission enhancement (AIEE) phenomenon is observed in the polycyclic aromatic alkaloid derivatives due to the configuration changes in the excited state, which is attributed to intramolecular proton-transfer and the formation of a new structure of enol form.

The formation of two-component molecular cocrystals can lead to the tunable excited state intramolecular proton transfer (ESIPT) process and emission, as first confirmed by both experimental and computational studies.

CB[7] can significantly modulate the intramolecular charge-transfer state of the designed ferrocene derivatives, resulting in remarkable changes in the absorption spectra, (1)H NMR spectra and electrochemical properties.

Fluorescent pyrimidine analogs containing a fused biphenyl unit were prepared in high yields using stereoselective N-glycosylation and Suzuki-Miyaura cross-coupling reactions. The resulting "push-pull" fluorophores exhibit highly solvatochromic emissions from twisted intramolecular charge-transfer (TICT) states.

For the first time, host-induced intramolecular charge-transfer complex formation in a guest containing both an electron donor and an electron acceptor is demonstrated in the cucurbit[8]uril cavity, leading to unusual back-folding of the guest molecule.

Coupling of superelectrophilic 4,6-dinitrobenzofuroxan with a pi-excessive indolizine structure affords a strongly dipolar substitution product which undergoes a facile but unusual rearrangement induced by an intramolecular oxygen atom transfer from the N-oxide functionality of the DNBF moiety.

New molecules, and , possessing six- and seven-membered ring pyrrole-pyridine hydrogen bonds, respectively, are designed and synthesized, which undergo excited-state intramolecular proton transfer with distinct reaction dynamics.

Thermal intramolecular electron transfer from the ferrocene (Fc) to naphthoquinone (NQ) moiety occurs efficiently by the addition of metal triflates (M(n)()(+): Sc(OTf)(3), Y(OTf)(3), Eu(OTf)(3)) to an acetonitrile solution of a ferrocene-naphthoquinone (Fc-NQ) linked dyad with a flexible methylene and an amide spacer, although no electron transfer takes place in the absence of M(n)()(+). The r...