Author
Pietro Schenone
Bio: Pietro Schenone is an academic researcher from University of Genoa. The author has contributed to research in topics: Cycloaddition & Sulfene. The author has an hindex of 13, co-authored 67 publications receiving 680 citations.
Topics: Cycloaddition, Sulfene, Pyran, Yield (chemistry), Bicyclic molecule
Papers published on a yearly basis
Papers
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TL;DR: In this article, open-chain and cyclic sym-1,3-diones with N,N-dimethylformamide dimethyl acetal gave, generally in high yield, a series of sym-2-dimethylaminomethylene-1.3-Diones which reacted with phenylhydrazine and methylhydrazines to afford, generally, in satisfactory yield, 1,5-disubstituted 4-acylpyrazoles.
85 citations
TL;DR: In this paper, a series of 3-and 5-substituted 1-phenyl-1H-pyrazole-4-carboxylic acids were converted by heating 5-benzyl 1-methyl-1-methyl 1H pyrazole in quantitative yield.
62 citations
TL;DR: In this paper, the relative esters of 4-substituted 2-amino-, 2-methyl- or 2-phenyl-5-pyrimidine carboxylic acids were obtained in moderate yields by reaction of the above dinucleophiles with ethyl 2,2-diformylacetate.
52 citations
TL;DR: The synthesis of 2-substituted 5-cyano-1,6-dihydro-2-methyl-6-oxo-3-pyridinecar-ylate is described in this article.
34 citations
TL;DR: For example, this paper showed that 5-substituted 1-aryl-1H-pyrazole-4-acetonitriles and 4-methyl-1-phenyl-1 H-pyrrrhine-3-carboxylates can be obtained by reaction with potassium cyanide in dimethylsulfoxide solution.
27 citations
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430 citations
TL;DR: The previous databases for 150 compounds have been expanded to encompass 339 compounds for which absorption spectra, fluorescence spectra and references to the primary literature have been included where available (552 spectra altogether).
Abstract: The design of new molecules for photochemical studies typically requires knowledge of spectral features of pertinent chromophores beginning with the absorption spectrum (λabs ) and accompanying molar absorption coefficient (e, m-1 cm-1 ) and often extending to the fluorescence spectrum (λem ) and fluorescence quantum yield (Φf ), where the fluorescence properties may be of direct relevance or useful as proxies to gain insight into the nature of the first excited singlet state. PhotochemCAD databases, developed over a period of 30 years, are described here. The previous databases for 150 compounds have been expanded to encompass 339 compounds for which absorption spectra (including e values), fluorescence spectra (including Φf values) and references to the primary literature have been included where available (552 spectra altogether). The compounds exhibit spectra in the ultraviolet, visible and/or near-infrared spectral regions. The compound classes and number of members include acridines (21), aromatic hydrocarbons (41), arylmethane dyes (11), azo dyes (18), biomolecules (18), chlorins/bacteriochlorins (16), coumarins (14), cyanine dyes (19), dipyrrins (7), heterocycles (26), miscellaneous dyes (13), oligophenylenes (13), oligopyrroles (6), perylenes (5), phthalocyanines (11), polycyclic aromatic hydrocarbons (16), polyenes/polyynes (10), porphyrins (34), quinones (24) and xanthenes (15). A database of 31 solar spectra also is included.
307 citations
TL;DR: The present overview outlines some of the recent research developments leading to a better understanding of the mechanisms which underlie psoralen induced phototoxicity.
Abstract: The present overview outlines some of the recent research developments leading to a better understanding of the mechanisms which underlie psoralen induced phototoxicity
217 citations
TL;DR: In this paper, 3,5,6-substituted 2-pyridone derivatives are generated by rapid microwave assisted solution phase methods using a one-pot, two-step protocol.
165 citations
TL;DR: Enaminones are synthesized by the rhodium(II)-catalyzed denitrogenative rearrangement reaction of 1-(N-sulfonyl-1,2,3-triazol-4-yl)alkanols, which are readily prepared from propargylic alcohols and N-solfonyl azides.
Abstract: Enaminones are synthesized by the rhodium(II)-catalyzed denitrogenative rearrangement reaction of 1-(N-sulfonyl-1,2,3-triazol-4-yl)alkanols, which are readily prepared from propargylic alcohols and N-sulfonyl azides. Intramolecular 1,2-hydride (or -alkyl) migration occurs with an intermediary α-imino rhodium(II) carbenoid species generated through denitrogenation of the 1,2,3-triazol-4-yl moiety. The resulting enaminones is converted into various heterocycles with replacement of the N-sulfonyl group.
157 citations