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Synthesis Of Highly Functionalized Nitrogen Heterocycle From 2-Hydroxycyclobutanones And Aromatic Amines
No full textThe development of novel methods for the selective functionalization and transformation of cyclobutanes is of great utility and has received significant attention in organic synthesis. Cyclobutanes play a significant role as building units because they can be easily transformed into a variety of interesting compounds by ring-expansion, -contraction and ring-opening reactions. In this account, we summarize our latest results on the use of 2-hydroxycyclobutanones as starting material of new tandem reactions leading to synthetically relevant nitrogen heterocycles
Discoveries through Organocatalyzed, Brønsted Acid Catalyzed and Non-Catalyzed Transformations of 2-Hydroxycyclobutanone
No full text2-hydroxycyclobutanone is a highly versatile four-carbon building block which can be transformed in a selective manner into a wide range of other useful synthetic intermediates via organo-catalyzed, Brønsted acid catalyzed or non-catalyzed procedures, which may involve tandem reactions leading to heterocyclic or ring-contracted molecular products
Valutazione dei test immunoenzimatici per la determinazione anticorpale verso il virus dell’epatite E
No full text4‐nitrophenol efficient photoreduction from exfoliated and protonated phenyl‐doped graphitic carbon nitride nanosheets
Full text linkThe photoreduction of 4‐nitrophenol to 4‐aminophenol by means of protonated and exfo-liated phenyl‐doped carbon nitride is reported. Although carbon nitride‐based materials have been recognized as efficient photocatalysts, the photoreduction of 4‐nitrophenol to 4‐aminophenol is not allowed because of the high recombination rate of the photogenerated electron–hole pairs. In this paper, we show the morphology effects on the photoactivity in phenyl‐doped carbon nitride. Structural (TEM, XRD, Raman) and optical characterization (absorption, photoluminescence) of the pro-tonated and exfoliated phenyl‐doped carbon nitride (hereafter pePhCN) is reported. The increased photocatalytic efficiency, with respect to the bulk material, is underlined by the calculation of the kinetic constant of the photoreduction process (2.78 × 10−1 min−1 and 3.54 × 10−3 min−1 ) for pePhCN and bulk PhCN, respectively. Finally, the detailed mechanism of the photoreduction process of 4‐ nitrophenol to 4‐aminophenol by modified phenyl carbon nitride is proposed
A Catalytic One-Pot Synthesis of Indolyl Cyclobutanones
Full text linkA general strategy for the synthesis of indolyl cyclobutanones via a tandem Bronsted acid catalyzed 2-hydroxycyclobutanone activation-indole nucleophilic addition has been exploited. The procedure leads to a wide range of 2- and 3-functionalized indole derivatives in good to high yields with broad substrate scope
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Esperienze cliniche in corso di teleanestesia nella gestione del Cervo sardo (Cervus elaphus corsicanus)
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