The [2+ 2] photocycloaddition is undisputedly the most important and most frequently used
photochemical reaction. In this review, it is attempted to cover all recent aspects of [2+ 2] …

Photochemical reactions contribute in a significant way to the existing repertoire of carbon–
carbon bond‐forming reactions by allowing access to exceptional molecular structures that …

For molecules with a singlet ground state, the population of triplet states is mainly possible
(a) by direct excitation and subsequent intersystem crossing or (b) by energy transfer from …

The nature of the excited state renders the development of chiral catalysts for
enantioselective photochemical reactions a considerable challenge. The absorption of a …

Photoinduced electron transfer is an essential step in the conversion of solar energy into
chemical energy in photosystems I and II (ref.), and is also frequently used by chemists to …

Chiral compounds exist as enantiomers that are non-superimposable mirror images of each
other. Owing to the importance of enantiomerically pure chiral compounds—for example, as …

Asymmetric catalysis of photochemical cycloadditions has been limited by the challenge of
suppressing the unselective background reaction. Here, we report that the high cross …

A palladium-catalyzed direct 2-alkylation reaction of free NH indoles was developed based
on a norbornene-mediated regioselective cascade C–H activation. The detailed reaction …

A palladium-catalyzed direct 2-alkylation reaction of free NH indoles has been developed.
This reaction relies on a norbornene-mediated cascade C–H activation process at the indole …

Thioxanthone 1, which was synthesized in a concise fashion from methyl thiosalicylate,
exhibits a significant absorption in the visible light region. It allows for an efficient …