Results 11 to 20 of about 73,479 (225)

Synthesis and Properties of 1,3-Disubstituted Ureas Containing (Adamantan-1-yl)(phenyl)methyl Fragment Based on One-Pot Direct Adamantane Moiety Inclusion

Molecules, 2023
A one-stage method for the preparation of 1-[isocyanato(phenyl)methyl]adamantane containing a phenylmethylene fragment located between the adamantane fragment and the isocyanate group, and 1-[isocyanato(phenyl)methyl]-3,5-dimethyladamantane with ...
Vladimir D’yachenko, Dmitry Danilov, Yaroslav Kuznetsov, Semyon Moiseev, Vladimir Mokhov, Vladimir Burmistrov, Gennady Butov   +6 more
doaj   +1 more source

Isocyanate toughened pCBT: Reactive blending and tensile properties

eXPRESS Polymer Letters, 2013
Cyclic butylene terephthalate oligomers (CBT) were reacted in a ring-opening polymerization with three types of isocyanates: a bifunctional aromatic type, a bifunctional aliphatic type and a polymeric aromatic isocyanate.
T. Abt, M. Sanchez-Soto, A. Martinez de Ilarduya, J. J. Bou   +3 more
doaj   +1 more source

Synthesis, enzyme inhibition and anticancer investigation of unsymmetrical 1,3-disubstituted ureas [PDF]

Journal of the Serbian Chemical Society, 2014
In this research work seventeen urea derivatives, including five new derivatives N-mesityl-N'-(3-methylphenyl)urea (2), N-(3-methoxyphenyl)-N'-(3-methylphenyl)urea (4), N-mesityl-N'-(4-methylphenyl)urea (6), N-(1,3-benzothiazol-2-yl)-N'-(3 ...
Mustafa Sana, Perveen Shahnaz, Khan Ajmal   +2 more
doaj   +1 more source

Synthesis and Structural Characterization of Amidine, Amide, Urea and Isocyanate Derivatives of the Amino-closo-dodecaborate Anion [B₁₂H₁₁NH₃]⁻

Molecules, 2018
The synthesis and structural characterization of new derivatives of [B12H12]2− is of fundamental interest and is expected to allow for extended applications.
Yuanbin Zhang, Yuji Sun, Tao Wang, Jiyong Liu, Bernhard Spingler, Simon Duttwyler   +5 more
doaj   +1 more source

A Review of the Surface Modification of Cellulose and Nanocellulose Using Aliphatic and Aromatic Mono- and Di-Isocyanates

Molecules, 2019
Nanocellulose has been subjected to a wide range of chemical modifications towards increasing its potential in certain fields of interest. These modifications either modulated the chemistry of the nanocellulose itself or introduced certain functional ...
Hatem Abushammala, Jia Mao
doaj   +1 more source

The Effects of Acetylated Poplar Particles on Applicational Properties of manufactured Particleboards with Isocyanate Resin [PDF]

تحقیقات علوم چوب و کاغذ ایران, 2009
The capability of acetylated poplar particles with isocyanate resinin manufacturing particleboard was investigated. The acetylation degrees at high, medium, and zero (control) levels and type of resin (isocyanate and urea formaldehyde) were considered as
Hamideh Abdolzadeh, Kazem Doost hosseini
doaj   +1 more source

Automated Dynamic Flow Experimentation for Rapid Kinetic Fitting of Transition Metal Catalysis

Angewandte Chemie, EarlyView.
We have developed an automated dynamic flow experimentation platform to automatically fit and identify the most accurate kinetic model from a generated set of candidates. Three transition metal‐catalyzed transformations were performed using this workflow.
Florian L. Wagner, Klara Silber, Tobias A. Doliner, C. Oliver Kappe   +3 more
wiley   +2 more sources

UV Laser-Induced Photodecomposition of Matrix-Isolated Salicylhydroxamic Acid: Identification of New Isocyanate Complexes

Molecules
Photochemical reactions of salicylhydroxamic acid were induced using tunable UV laser radiation followed by FTIR spectroscopy. Four pairs of co-products were experimentally found to appear in the photolysis: C6H4(OH)NCO⋯H2O (1), C6H4(OH)C(O)N⋯H2O (2 ...
Magdalena Sałdyka, Zofia Mielke
doaj   +1 more source

Tandem Reactivity of Metal−Carbon and Carbon−Silicon Bonds in Mononuclear α‐Silyl Organolithium or Organosodium Complexes Towards CO, CO2 and Heteroallenes

Angewandte Chemie, EarlyView.
Anionic α‐silyl alkyl is one of the most used organometallic building blocks and funtional groups. Traditionally, the C─Si bond in these complexes is considered as inert. In this work, we report a series of reactions between mononuclear organo‐lithium and ‐sodium complexes with CO, CO2, or heteroallenes.
Xiao Yang, Jack M. Hemingway, Wataru Kanna, Nathan Davison, Hiroki Hayashi, Louise Male, Paul G. Waddell, James A. Dawson, Erli Lu   +8 more
wiley   +2 more sources

Synthesis of 2-Azetidinones via Cycloaddition Approaches: An Update

Reactions
The present review is a comprehensive update of the synthesis of monocyclic β-lactams via cycloaddition reactions. According to the IUPAC definition of cycloaddition, both elementary and stepwise processes (formal cycloadditions) have been considered ...
Franca Maria Cordero, Donatella Giomi, Fabrizio Machetti   +2 more
doaj   +1 more source