Dual reactivity in 1,2-disubstituted dihydro-N-heteroaromatic systems. 12. Aromatization of 1-substituted-2-(indol-3-yl)-1,2-dihydroquinolines with 1,3,5-trinitrobenzene
Antimony(V) Bromide and Polybromide Complexes with N-alkylated Quinolinium or Isoquinolinium Cations: Substituent-dependent Assembly of Polymeric Frameworks
作者:Sergey A. Adonin、Mikhail A. Bondarenko、Alexander S. Novikov、Pavel A. Abramov、Pavel E. Plyusnin、Maxim N. Sokolov、Vladimir P. Fedin
DOI:10.1002/zaac.201900165
日期:2019.10.14
Reactions of [SbIIIBr6]3– with Br2 in HBr in the presence of N‐substituted quinolinium or isoquinolinium cations result in new complexes of hexabromidoantimonates of SbV and their polybromide adducts: (N‐MeQuin)2[SbBr6](Br3)} (1), (N‐MeIsoquin)2[SbBr6](Br3)} (2), and (N‐EtQuin)[SbBr6] (3). Thermal stability was studied; estimated energies of supramolecular Br···Br interactions were calculated.
Provided is a compound capable of generating a Lewis acid in response to light unlike conventional photo acid generators. The compound comprises an anionic moiety having a central boron atom and a particular cationic moiety (for example, a cation having a HOMO-LUMO gap of 5.3 eV or less). The cationic moiety may, for example, have a skeleton selected from an N-substituted pyridinium skeleton, an N-substituted bipyridinium skeleton, an N-substituted quinolinium skeleton, and a pyrylium skeleton.
Diastereoselective construction of carbo-bridged polyheterocycles by a three-component tandem annulation reaction
作者:Maorui Wang、Min Zhang
DOI:10.1039/d3ob01013a
日期:——
hydroamination-induced tandem annulation process, we herein report a new three-component reaction for room temperature construction of carbo-bridged polyheterocycles with exclusive diastereoselectivity, which features readily available feedstocks, catalyst-free conditions, good substrate and functionality compatibility, no need for transitionmetal catalysts, and high step and atom efficiency. The products
Amino‐Modified Polymer Immobilized Ionic Liquid Stabilized Ruthenium Nanoparticles: Efficient and Selective Catalysts for the Partial and Complete Reduction of Quinolines
作者:Adhwa A. Alharbi、Corinne Wills、Thomas W. Chamberlain、Richard A. Bourne、Anthony Griffiths、Sean M. Collins、Kejun Wu、Pia Mueller、Julian G. Knight、Simon Doherty
DOI:10.1002/cctc.202300418
日期:2023.6.9
Reduction of quinolines: RuNPs stabilised by an amino-decorated imidazolium-based polymer immobilized ionic liquid catalyse the dimethylamine borane mediated partial reduction of 3-substituted quinolines to the corresponding 1,2-dihydroquinoline with remarkable selectivity while 5- and 6-substituted quinolines are reduced to the corresponding 1,2,3,4-tetrahydroquinoline (THQ).
A process for producing an aliphatic isocyanate from an aliphatic primary amine comprising a carbonylation step in which an aliphatic primary amine is allowed to react with carbon monoxide at a temperature of about 100-250°C in the presence of an aromatic hydroxyl compound having a pKa value of not more than about 11, molecular oxigen and a catalyst system comprising at least one member selected from palladium and rhodium metals and components thereof and at least one member selected from iodine and bromine and compounds thereof and a combined separation and recovery step comprising a pyrolysis-distillation reaction in which the mixture of carbonylated products is heated to a temperature of from about 100 to 300°C.