Results 41 to 50 of about 11,450 (195)
Ultrasound-assisted catalytic synthesis of acyclic imides in the presence of p-toluenesulfonic acid under solvent free conditions [PDF]
, 2012 A rapid and convenient preparation of acyclic imides by the reaction of aliphatic and aromatic nitriles with acyclic carboxylic anhydride in the presence of catalytic amounts of p-toluenesulfonic acid under thermal or ultrasonic conditions is reported.
Filvan Najmeh +2 more
core +1 more source
Efficient Stereo-Selective Fluorination on Vitamin D3 Side-Chain Using Electrophilic Fluorination
Biomolecules, 2023 Our research regarding side-chain fluorinated vitamin D3 analogues has explored a series of efficient fluorination methods. In this study, a new electrophilic stereo-selective fluorination methodology at C24 and C22 positions of the vitamin D3 side-chain
Fumihiro Kawagoe +2 more
doaj +1 more source
Applied Sciences, 2019 Six kinds of chiral polyamide-imides (PAI3a⁻3f) have successfully been synthesized via direct polycondensation. The thermal properties of the materials were evaluated by the gravimetric analysis (TGA) and differential scanning calorimetry (DSC).
Weipeng Liu +5 more
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Reductive Heck reactions of N-arylamino-substituted tricyclic imides [PDF]
Journal of the Serbian Chemical Society, 2016 The C-C coupling of N-(3-chloro-4-fluorophenyl)amino-bicyclo[2.2.1] hept-8-ene-2-endo,6-endo-dicarboximide (3) which was prepared as a new starting material and N-(2,4-dinitrophenyl)aminobicyclo[2.2.1]hept-8- -ene-2-endo,6-endo-dicarboximide (6) with ...
Atbakar Muge +2 more
doaj +1 more source
Nature Communications, 2023 The tunability of reaction pathways is required for exploring efficient and low cost catalysts for ammonia synthesis. There is an obstacle by the limitations arising from scaling relation for this purpose.
Zichuang Li +9 more
doaj +1 more source
5,6-Dihydro-2H-pyran-3(4H)-on als Baustein zur Synthese pyrananellierter Heterocyclen [PDF]
, 1984 Während 5,6-Dihydro-2H-pyran-3(4H)-on (3) sich mit ortho-substituierten Phenylcarbonylverbindungen nur in Einzelfällen regioselektiv zu pyrananellierten Heterocyclen umsetzt - z. B.
Eiden, Fritz, Wanner, Klaus Th.
core +1 more source
An improved processible acetylene-terminated polyimide for composites [PDF]
, 1985 The newest member of a family of thermosetting acetylene-substituted polyimide oligomers is HR600P. This oligomer is the isoimide version of the oligomer known as HR600P and Thermid 600.
Landis, A. L., Naselow, A. B.
core +1 more source
A Study of the Conformers of the (Nonafluorobutanesulfonyl)imide Ion by Means of Infrared Spectroscopy and Density Functional Theory (DFT) Calculations [PDF]
, 2017 Pyrrolidinium-based ionic liquids with anions of the per(fluoroalkylsulfonyl)imide family are particularly interesting for their use as electrolytes in lithium batteries.
Appetecchi, Giovanni +3 more
core +2 more sources
Beilstein Journal of Organic Chemistry, 2008 The coupling of arylboroxines with a variety of amines, amides, imides and sulfonamides catalyzed by a copper salt/EtOH system has been developed. In the absence of a base or additive the corresponding N-arylation products were obtained in moderate to ...
Zhang-Guo Zheng +4 more
doaj +1 more source
Phosphorus-containing imide resins [PDF]
, 1985 Cured polymers of bis and tris-imides derived from tris(m-aminophenyl) phosphine oxides by reaction with maleic anhydride or its derivatives, and addition polymers of such imides, including a variant in which a monoimide is condensed with a dianhydride ...
Fohlen, G. M. +2 more
core +1 more source