The photochemical reactivity of acyl azolium salts derived from aliphatic carboxylic acids has been investigated. These species, which serve as models for intermediates generated in N-heterocyclic carbene (NHC) organocatalysis, undergo Norrish type II elimination reactions under irradiation with UVA light analogy to structurally related aromatic ketones. Moreover, efficient Norrish-Yang cycliza...

Cyclopropanes are strained carbocycles that can undergo ring opening reactions in which one of the C–C bond present cycle is broken following a radical or ionic mechanism. Recently, organocatalysis has emerged as convenient tool for promoting these ring-opening processes under very mild reaction conditions and allowing unconventional preparation interesting compounds starting from differently s...

Chiral porous organic frameworks have emerged in the last decade as candidates for heterogeneous asymmetric organocatalysis. This review aims to provide a summary of synthetic strategies towards design chiral materials, characterization techniques used evaluate their chirality, and applications We briefly describe types frameworks, including crystalline (covalent COFs) amorphous (conjugated mic...

Efficient synthetic methods that avoid the extensive use of hazardous reagents and solvents, as well harsh reaction conditions, have become paramount in field organic synthesis. Organocatalysis is notably one best tools building chemical bonds between carbons carbon-heteroatoms; however, most examples still employ toxic volatile solvents. Although a portfolio greener solvents now commercially a...

The Front Cover shows the commitment that our generation must keep towards future generations: reconciling well-being with planetary health, while preserving same opportunities for posterity. It depends on ability to produce useful and specialty chemicals in economical, environmentally friendlier, resource-preserving, energy-efficient ways. Organocatalysis allows leave a greener world children ...

: Oxindoles are an important class of heterocyclic scaffolds widely present in natural products and bioactive compounds. For this reason, a plethora methodologies for the stereoselective synthesis enantioenriched oxindoles has been studied over years. Among all reported synthetic strategies, organocatalysis proven to be powerful tool asymmetric compounds being step- atom-economical, environment...