Results 231 to 240 of about 11,810 (276)

A New Modified Electrophilic Cyanation of Aromatics with Activated Aryl Cyanates

Synthetic Communications, 1992
Abstract The selective cyanation of electron-rich aromatics succeeds in moderate to good yields with the activated aryl cyanates 1a-d using AlCl3/HCl. The formation of p-isomeres is preferred.
H. J. Niclas, K. Buttke, T. Reiher
openaire   +2 more sources

THE BLOOD CYANATES IN THE TREATMENT OF HYPERTENSION

, 1936
A few years ago I gave a number of patients with hypertension potassium or sodium thiocyanate with results that were generally unsatisfactory. Some showed extreme weakness, nausea and dizziness, while an occasional one seemed to be considerably improved ...
M. H. Barker
semanticscholar   +1 more source

Cyanate Esters

2014
Due to their special structural features (triazine ring, oxygen linkages, low dielectric loss) cyanate ester resins represent a promising class of high-performance polymers. They are suitable as matrix materials for applications where, among other properties, stability at high service temperatures, low dielectric loss, and good mechanical performance ...
openaire   +2 more sources

Curing of Cyanates with Primary Amines

, 2001
The reaction of 4-tert-butyl phenylcyanate and aniline was analysed with the help of HPLC, MALDI-TOF and FT-IR. It was found that the main reaction products are aryloxy- and arylamino-substituted triazines.
J. Bauer, M. Bauer
semanticscholar   +1 more source

Covalent Cyanates and Fulminates

Current Organic Chemistry, 2011
AbstractReview: 137 refs.
Tibor Pasinszki, Melinda Krebsz
openaire   +3 more sources

Is cyanate a carbonic anhydrase substracte?

Proteins: Structure, Function, and Genetics, 1997
A study was undertaken to investigate whether diverse carbonic anhydrase (CA) isozymes (both native Zn as well as cobalt-substituted) are able to catalyze the hydrolysis of anions such as cyanide, cyanate, and thiocyanate. A controversy exists between the crystallographic and spectroscopic data of CA II-anion adducts.
SUPURAN, CLAUDIU TRANDAFIR, Conroy CW, Maren T.H.   +2 more
openaire   +4 more sources

A Practical Amine-Free Synthesis of Symmetric Ureas and Thioureas by Self-Condensation of Iso(thio)cyanates

, 1999
Isocyanates and isothiocyanates are readily transformed into the corresponding symmetric N,N’-disubstituted ureas and thioureas upon treatment with pyridine-water with no formation of side products. Evidence is shown for an amine-free mechanistic pathway,
J. J. Blanco, C. Barría, J. M. Benito, C. Mellet, J. Fuentes, F. Santoyo-González, J. M. Fernández   +6 more
semanticscholar   +1 more source

Anodic cyanation of tetramethylthiophene

Journal of the Chemical Society, Perkin Transactions 1, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
K. Minagawa, K. Yoshida, Kazuyuki Takeda
openaire   +3 more sources

Nuclear cyanation of diphenylacetylene

Journal of the Chemical Society D: Chemical Communications, 1970
Electrochemical oxidation of diphenylacetylene in methanol in the presence of sodium cyanide yields p-cyanodiphenylacetylene.
Takayuki Fueno, Kunihisa Yoshida
openaire   +2 more sources

Molten state reactivity of difunctional cyanates: Thermal and spectroscopic studies by liquid and solid CP-MAS13C-NMR

, 1997
Using differential scanning calorimetry, we have investigated three difunctional cyanate monomers differing by their central group: bisphenol A dicyanate (BADCy), bisphenol E dicyanate (BEDCy), and hexafluorinated bisphenol A dicyanate (BAFDCy), to ...
M. Grenier-loustalot, C. Lartigau
semanticscholar   +1 more source