Excited (triplet) states offer a myriad of attractive synthetic pathways, including
cycloadditions, selective homolytic bond cleavages and strain-release chemistry …

The concept of strain in organic compounds is as old as modern organic chemistry and was
initially introduced to justify the synthetic setbacks along the synthesis of small ring systems …

Synthesis of bicyclic scaffolds has attracted growing interest because they are of high
importance in modern pharmaceutical development. Here we report a strategy to access …

Fluorinated fused rings are challenging to construct from simple starting materials. Herein,
we report the first photocatalyzed cascade reactions of readily available cyclopropanols and …

Cyclometalated Ir (III) complexes are often chosen as catalysts for challenging photoredox
and triplet–triplet-energy-transfer (TTET) catalyzed reactions, and they are of interest for …

Sensitized triplet–triplet annihilation upconversion is a promising strategy to use visible light
for chemical reactions requiring the energy input of UV photons. This strategy avoids unsafe …

Photocatalysis is a versatile and rapidly developing field with applications spanning artificial
photosynthesis, photo-biocatalysis, photoredox catalysis in solution or supramolecular …

Visible-light-driven photoredox catalysis is known to be a powerful tool for organic synthesis.
Its occurrence critically depends on the twice exothermic single-electron transfer processes …

Cycloaddition reactions─ epitomized by the Diels–Alder reaction─ offer an arguably
unmatched springboard for achieving chemical complexity, often with excellent selectivity, in …

Several energy‐demanding photoreactions require harsh UV light from inefficient light
sources. The conversion of low‐energy visible light to high‐energy singlet states via triplet …