Regioselective Palladium(0)-Catalyzed Cross-Coupling Reactions of Brominated Furans, Thiophenes, Pyrroles and Selenophenes and Synthesis of N,O-Heterocycles by Cyclocondensations of Hydrazone and Oxime Dianions [PDF]
The main work focuses on Palladium chemistry in organic synthesis to give new methodologies for functionalization of heterocycles, such as, furan, thiophenes, pyrroles and selenophenes. In addition, the second part of this thesis is a contribution to the
Dang, Thanh Tung (gnd: 138415692)
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Chemical constitutions in the Colour Index™: A century of colourant classification
Abstract This article details how the Colour Index™ (CI) system categorises and unambiguously labels commercial dyes and pigments based upon their chemical constitutions. It outlines the current process by which colourants that are new to the market find a place within CI and acquire generic identifiers.
Andrew Towns
wiley +1 more source
NUCLEOPHILIC PHOSPHINE ADDITION: EXPLORATION OF NOVEL ALKYNE TRANSFORMATIONS [PDF]
Nucleophilic phosphine catalysis has demonstrated its value in synthetic chemistry by allowing for mild carbon-carbon bond formation. Many phosphine-catalyzed reactions with electron-deficient alkynes have been reported in recent years, leading to an ...
pierce, brett
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(Z)‐2‐oxazolines are available in a stereoselective fashion by cyclization of propargylic amides with internal triple bonds in the presence of HCl generated in situ from hexafluoroisopropanol (HFIP) and TMSCl. Response surface methodology was crucial to optimize the reaction conditions.
Nicholas Jankowski, Norbert Krause
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Funktionalisierung von 6H-1,2-Oxazinen durch 1,3-dipolare Cycloadditionen und Halogenierungen [PDF]
6H-1,2-Oxazines were functionalised at the C-C double bond by 1,3-dipolar cycloadditions and halogenation reactions. The reactions were carried out with 6-ethoxy-3-phenyl-6H-1,2-oxazine, 6-ethoxy-3-ethoxycarbonyl-6H-1,2-oxazine and 6-ethoxy-3 ...
Schmidt, Elmar
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Synthesis of Saturated Heterocycles via Metal-Catalyzed Formal Cycloaddition Reactions That Generate a C–N or C–O Bond [PDF]
In this section, the synthesis of saturated N- and O-heterocycles via formal cycloaddition is presented. The main focus is on metal-catalyzed reactions involving C–C or C–X σ bond cleavage in three- or four-membered rings.
Waser, Jérôme
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Selective [3+2] and [3+3]-Cycloaddition Reactions of Nitrones [PDF]
Cationic chiral dirhodium(II,III) carboxamidates, obtained from the oxidation of the corresponding dirhodium(II,II) carboxamidates by nitrosonium salts, are efficient promoters in asymmetric Lewis acid catalyzed reactions.
Wang, Xiaochen
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The Synthesis and Transformation of Nitrones for Organic Synthesis [PDF]
Nitrones are important compounds and are highly useful in many aspects. The first part describes the methods for synthesis of nitrones, which are useful and environmentally friendly.
Imada, Yasushi, Murahashi, Shun-Ichi
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The Chemistry of Selenosilanes: A Topic Overview [PDF]
Selenium-containing molecules represent a valuable class of compounds with a variety of applications in chemical and biological fields. Selenated reagents are used as intermediates to introduce functional groups (e.g., double bonds) onto different ...
Capperucci, Antonella, Tanini, Damiano
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Multivalent Aminoseptanose Mimetics by Copper-Catalyzed (3+2) Cycloadditions of Azidomethyl-Substituted Bicyclic 1,2-Oxazines [PDF]
Starting from readily available enantiopure azidomethyl-substituted bicyclic 1,2-oxazine derivatives and mono-, di- or trialkynes, their copper-catalyzed (3+2) cycloadditions furnished a series of 1,2,3-triazolyl-linked compounds in good yields.
Bouché, Léa +2 more
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