Results 151 to 160 of about 57,276 (400)

Biodegradable Gel Blends with Enhanced Sensing Capabilities: SIO₂‐Based Innovations for Sustainable and Eco‐Friendly Packaging

open access: yesChemistry – A European Journal, EarlyView.
Biodegradable gelatin‐based gel blends reinforced with SiO₂ and nanoclay exhibit enhanced mechanical strength, thermal stability, and ion‐mediated structural integrity. These metal‐free, eco‐friendly materials open new opportunities for sustainable packaging.
Miroslawa Prochon   +3 more
wiley   +1 more source

The Fragmentation of 2,3-Dihydroisothiazol-3-one 1,1-Dioxide Derivatives: A Novel Cheletropic Process

open access: yesCHIMIA, 1992
Adducts obtained by 1,3-dipolar cycloadditions to 2,3-dihydroisothiazol-3-one 1,1-dioxides are inclined to undergo a cheletropic process, by which the newly formed heterocyclic part undergoes aromatization, while SO2 is extruded and an ...
Kaspar F. Burri
doaj   +2 more sources

Synthesis, Modification and Prospect of Bio-based Polyurethane

open access: yesPige Kexue Yu Gongcheng
Bio-based polyurethane is a type of polyurethane material primarily derived from natural bio-based raw materials, synthesized through the reaction of bio-based polyols and bio-based isocyanates.
Kangjia SONG   +4 more
doaj   +1 more source

Rh(III)-catalyzed directed C–H bond amidation of ferrocenes with isocyanates

open access: yesBeilstein Journal of Organic Chemistry, 2012
[RhCp*(OAc)2(H2O)] [Cp* = pentamethylcyclopentadienyl] catalyzed the C–H bond amidation of ferrocenes possessing directing groups with isocyanates in the presence of 2 equiv/Rh of HBF4·OEt2.
Satoshi Takebayashi   +3 more
doaj   +1 more source

Verwendung von Isocyanaten und ihren Additionsprodukten

open access: yesCHIMIA, 1962
Isocyanates are used in dyestuffs and as an ingredient of textile auxiliaries. On hides and skins, hexamethylene diisocyanate ensures excellent white tannage.
Fritz Schmidt
doaj   +1 more source

Ueber das Verhalten aromatischer Aldoxime gegen Isocyanate [PDF]

open access: green, 1893
Heinrich Goldschmidt   +1 more
openalex   +1 more source

Total Synthesis of Kanamycins

open access: yesChemistry – A European Journal, EarlyView.
This paper reports on creating a novel synthetic route of kanamycins A and B using the desymmetric boron‐mediated aglycon delivery (BMAD) reaction of meso‐diol acceptor with 1,2‐anhydro donor and regio‐ and stereoselective glycosylation of diol acceptor with trichloroacetimidate donor for introduction of a set of challenging 1,2‐cis‐glycosidic linkages
Kanae Hosomi   +7 more
wiley   +1 more source

Interaction of aromatic isocyanates with n-acetyl-lcysteine under physiological conditions [PDF]

open access: yes, 2006
Isocyanates are of toxicological relevance since they are considered to cause occupational asthma. The majority of polyurethanes is based on aromatic diisocyanates (e.g., TDI and MDI), they are used for foams, elastomers, adhesives and coatings ...
Mormann, Werner   +2 more
core  

A Sydnonimine‐based Click‐and‐Release Approach to Cyclic Products

open access: yesChemistry – A European Journal, EarlyView.
Macrocyclick‐and‐release: The combination of a chemoselective Cu‐catalyzed click‐and‐release reaction and pyrene tags allows efficient synthesis of macrocycles and easy isolation by simple filtration through graphitic material. Abstract Herein, we report a general, efficient, and practical methodology for the macrocyclization of compounds based on the ...
Guillaume Force   +5 more
wiley   +1 more source

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