A5050821624- Radical Photochemical Reactions
- Catalytic C–H Functionalization Methods
- Sulfur-Based Synthesis Techniques
- Oxidative Organic Chemistry Reactions
- Fluorine in Organic Chemistry
- Catalytic Cross-Coupling Reactions
- Chemical Synthesis and Reactions
- Photochemistry and Electron Transfer Studies
- Photochromic and Fluorescence Chemistry
- Polyoxometalates: Synthesis and Applications
- Synthesis and Catalytic Reactions
- Chemistry and Chemical Engineering
- Advanced Photocatalysis Techniques
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Porphyrin and Phthalocyanine Chemistry
- TiO2 Photocatalysis and Solar Cells
- Organic Chemistry Cycloaddition Reactions
- Catalytic Alkyne Reactions
- Synthesis of Indole Derivatives
- Cyclization and Aryne Chemistry
- Chemical Synthesis and Analysis
- Cyclopropane Reaction Mechanisms
- Luminescence and Fluorescent Materials
University of Pavia
2016-2025
Bluegreen Strategy (Italy)
2012-2021
National Interuniversity Consortium of Materials Science and Technology
2021
Arab American University
2020
Osaka Prefecture University
2011-2016
Institut Català d'Investigació Química
2016
Università di Camerino
2014
Fundación Ciencias Exactas y Naturales
2009
Institute of Organic Synthesis and Photoreactivity
2006
Istituto di Ricerche Chimiche e Biochimiche G. Ronzoni
1999-2000
The synergistic control of the SH2 transition states hydrogen abstraction by polar and steric effects provides a promising strategy in achieving site-selective C(sp3)–H functionalization under decatungstate anion photocatalysis. By using this photocatalytic approach, C–H bonds alkanes, alcohols, ethers, ketones, amides, esters, nitriles, pyridylalkanes were functionalized site-selectively. In remarkable case 2,4-disubstituted cyclohexanone bearing five methyl, methylene, three methine bonds,...
Direct activation of gaseous hydrocarbons remains a major challenge for the chemistry community. Because intrinsic inertness these compounds, harsh reaction conditions are typically required to enable C(sp3)-H bond cleavage, barring potential applications in synthetic organic chemistry. Here, we report general and mild strategy activate bonds methane, ethane, propane, isobutane through hydrogen atom transfer using inexpensive decatungstate as photocatalyst at room temperature. The...
The majority of organic reactions are commonly carried out inside a lab, under fume hood. A particular case is that photochemical reactions, field where the pioneering experiments by Giacomo Ciamician demonstrated more than one century ago different processes can be outdoors, for example, on balcony his own department, upon exposure reacting mixtures to sunlight. main problem related this chemistry "window ledge" most compounds colorless and their absorption in solar light region cases...
Tomorrow always dyes! Organic dyes (e.g., Rose Bengal, Eosin Y) have been recently used as versatile photoredox organocatalysts in place of metal complexes Ru2+ salts). Accordingly, photoinduced electron transfer reactions induced by excited were exploited various synthetic processes. The performed under metal-free conditions and visible light irradiation.
A mild and selective C(sp
Recent examples of sustainable acylations by photogenerated acyl/alkoxycarbonyl/carbamoyl radicals have been discussed in this article.
In contemporary drug discovery, enhancing the sp
Where to look for really ‘green’ synthetic methods, under conditions as mild those nature uses? A hundred years ago, a great scientist, Giacomo Ciamician, confronted the problem. He had no doubt of answer: it was solar light. The approach and discoveries by Ciamician are illustrated in connection with present-day green chemistry.
With tungsten and lamp: Ketones were prepared by the photocatalytic generation of acyl radicals from aldehydes trapping them with equimolar amounts electrophilic alkenes. Photocatalysis tetrabutylammonium decatungstate is effective also at low temperatures (−20 to −50 °C), thus minimizing radical decarbonylation allowing acylation highly substituted aldehydes. EWG=electron-withdrawing group. Supporting information for this article available on WWW under...
The decatungstate anion [W10O32]4– is a widely used photocatalyst for promoting hydrogen atom transfer (HAT) reactions. mechanism implicated in the activation of organic substrates, however, still needs to be clarified and has been claimed involve an unknown relaxed excited state triplet multiplicity, tagged wO. A subpicosecond investigation allowed us follow early events leading chemically reactive species. hot singlet (S1HOT) individuated through pump–probe experiments, yielding S1 by...
Abstract This minireview encompasses the most recent (since 2010) advancements in field of photocatalytic hydrogen‐atom transfer (HAT) processes for CH bond functionalization. The direct HAT process promoted from excited state a photocatalyst is limited to classes polyoxometalates and aromatic ketones, but alternative strategies have recently been devised alleviate this shortcoming, making use indirect reactions. applications these two approaches organic synthesis, including formation CC,...
A three-component coupling between alkanes, CO, and electron-deficient alkenes in the presence of a catalytic amount (nBu4N)4W10O32 (TBADT) has resulted efficient formation unsymmetrical ketones. This process is based on carbonylation alkyl radicals photocatalytically generated by CH activation alkanes subsequent addition to (see scheme; EWG=electron-withdrawing group). Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but...
Tetrabutylammonium decatungstate (TBADT) accelerated the addition of C–H bonds to N═N double bond diisopropyl azodicarboxylate (DIAD) under irradiation conditions. The photoinduced three-component coupling between cyclic alkanes, CO, and DIAD was also achieved give corresponding acyl hydrazides.
A facile sunlight-induced derivatization of heteroaromatics<italic>via</italic>TBADT photocatalyzed C–H functionalization in amides, ethers, alkanes and aldehydes is described.
Visible light induced direct β-C–H/C–C conversion of cyclopentanones was accomplished by using tetrabutylammonium decatungstate, TBADT, as the photocatalyst.