Results 51 to 60 of about 2,868 (178)

Activation of the CN Single Bond in Iso(thio)cyanates by a Phosphinine‐Borane Lewis Pair: Unravelling a Complex Reaction Network

open access: yesChemistryEurope
The first example of a CN σ‐bond activation in tert‐butyl isocyanate and isothiocyanate by a 3,5‐bis(trimethylsilyl)‐phosphinine‐B(C6F5)3 Lewis pair is reported.
Samantha Frank   +6 more
doaj   +1 more source

Polymorphism in Tetramethylammonium Selenocyanate – Crystal Structures of α‐, β‐, and γ‐[NMe4][SeCN]

open access: yesZeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 5, 18 March 2026.
This study reports the synthesis and crystallographic investigation of tetramethylammonium selenocyanate. The structures of α‐, β‐, and γ‐[NMe4][SeCN] are related to one another and also to the CsCl‐type. In the solid state, tetramethylammonium selenocyanate, [NMe4][SeCN], is polymorphic.
Sven Ringelband   +4 more
wiley   +1 more source

Methods of determining the quality of water using the functional characteristics of algae [PDF]

open access: yes, 1980
In the study of questions relating to the quality of raw water and the biological produc- tivity of water bodies algal indicators have an important place.
Sirenko, L.A.
core  

Radiolysis of ammonia-containing ices by energetic, heavy and highly charged ions inside dense astrophysical environments [PDF]

open access: yes, 2009
Deeply inside dense molecular clouds and protostellar disks, the interstellar ices are protected from stellar energetic UV photons. However, X-rays and energetic cosmic rays can penetrate inside these regions triggering chemical reactions, molecular ...
Balanzat, E.   +6 more
core   +3 more sources

Combination of a UPO‐Based Epoxidation With a Subsequent Ring‐Opening Reaction for the Synthesis of Amino Alcohols

open access: yesChemBioChem, Volume 27, Issue 5, 13 March 2026.
The synthesis of aromatic amino alcohols via a combination of an unspecific peroxygenase‐catalysed reaction, oxyfunctionalization, and addition of selected nucleophiles and electrophiles in a highly atom‐efficient manner was investigated. This study presents the design to aim for an atom‐efficient chemo‐enzymatic synthesis route towards aromatic amino ...
Simon Last   +3 more
wiley   +1 more source

π‐Expanded Fluoranthenes as Chromophores With Tailored Properties

open access: yesHelvetica Chimica Acta, Volume 109, Issue 3, March 2026.
A series of π‐expanded fluoranthene scaffolds selectively functionalized with electron donors and acceptors were synthesized. The evolution of the structural, optoelectronic, and redox properties in relation to substitution and cyclization was comprehensively studied both in experiment and in theory. The results identify the compounds as highly tunable
Silas C. Eiden   +4 more
wiley   +1 more source

cyanates

open access: yes, 2014
Citation: 'cyanates' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.C01485 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Remote functionalization by tandem radical chain reactions [PDF]

open access: yes, 1997
Normal radical relay chlorination of cholestan-3α-ol directed by an attached m-iodobenzoate ester group affords a 9α-chloro steroid, but when the same reaction is conducted in the presence of an excess of CBr4 the product is a 9α-bromo steroid ...
Wiedenfeld, David
core   +1 more source

Synthesis of Tetracyclic systems and (Thio)Ureas from Aminodi(Hetero)Arylamines in the Thieno[3,2-b]Pyridine series [PDF]

open access: yes, 2012
Foundation for the Science and Technology (FCT–Portugal) for financial support through the Portuguese NMR network (Bruker 400 Avance III-Univ Minho). FCT and FEDER (European Fund for Regional Development)-COMPETE/QREN/EU for financial support through the
Calhelha, Ricardo C.   +2 more
core  

Electrochemical method of controlling thiolate coverage on a conductive substrate such as gold [PDF]

open access: yes, 1998
An electrochemical method for forming a partial monomolecular layer of a predetermined extent of coverage of a thiolate of the formula, XRS--, therein R can be a linear or branched chain hydrocarbon or an aromatic or the like and X can be any compatible ...
Porter, Marc D., Weisshaar, Duane E.
core   +1 more source

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