Results 91 to 100 of about 48,553 (267)
Les isocyanates en milieu de travail : évaluation et prévention
, 2013 Animé par Simon Aubin et Brigitte Roberge, professionnels scientifiques à l’IRSST, ce webinaire, tenu le 2 octobre 2013, visait trois objectifs : 1) connaître les principaux isocyanates, leurs propriétés, leurs utilisations en milieu de travail, leurs ...
Roberge, Brigitte, Aubin, Simon
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Reaction of acyl isocyanates with 3-formylcamphor [PDF]
, 1985 Benzoyl and trichloroacetyl isocyanates react with 3-formylcamphor to form only the O-addition, products.
Arbuzov B., Dautova L., Zobova N.
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Chemistry – A European Journal, EarlyView.A molecular design strategy combines lignin‐derived aromatic units, sugar‐derived furan groups, and flexible glycol segments to create wet‐spinnable polyurethanes. Thermally reversible Diels–Alder crosslinking chemistry enables formation of crosslinked thermosetting fibers, repeated de‐crosslinking/re‐crosslinking cycles, and tunable fiber properties ...
Rafael N. L. Menezes +7 more
wiley +1 more source
, 2002 An air sampling method for the determination of isocyanates. aminoisocyanates and amines formed during the thermal degradation Of polyurethane (PUR) is presented.
Skarping, Gunnar, +4 more
core +2 more sources
Isocyanates and amines from fires - a screening over commom materials found in buildings
, 2003 Isocyanates, aminoisocyanates and amines were quantified from the combustion of 24 different materials or products typically found in buildings. Small-scale combustion experiments were conducted in the cone calorimeter, where generally well-ventilated ...
Skarping, G. +5 more
core +1 more source
Chemistry – A European Journal, EarlyView.Two families of bTurea‐derived biradicals, bcTmols and bcTCOOKs, were prepared as polarizing agents for dynamic nuclear polarization (DNP)‐enhanced NMR through short and efficient synthetic routes. The best‐performing biradical, bcTCOOK‐M2, containing two methyl groups on the urea bridge, provided signal enhancements of up to ∼220 at 14.1 T and 100 K ...
Ancy T. Wilson +3 more
wiley +1 more source
C‐Terminal Functionalization Methods of Amino Acids, Peptides, and Proteins
Chemistry – A European Journal, EarlyView.C‐terminal functionalization offers powerful routes to peptide and protein diversification, yet epimerization, hydrolysis, and selectivity remain key challenges. This Review surveys enzymatic, decarboxylative, and condensation strategies, highlighting advances toward chemo‐ and regioselective, protecting‐group‐free, atom‐efficient methods applicable to
Jay Hanssens +3 more
wiley +1 more source
Catalytic Annulation of Epoxides with Heterocumulenes by the Indium-Tin System
Molecules, 2018 In the synthesis of five-membered heterocycles by the annulation of epoxides with heterocumulenes such as carbon dioxide and isocyanates, we developed the indium-tin catalytic system and synthesized various cyclic adducts including novel types products ...
Itaru Suzuki +3 more
doaj +1 more source
, 2021 Nitrogen atoms play a distinctive role in eliciting a host of biological functions. Consequently, the efficient synthesis of nitrogen-containing molecules remains an important challenge for synthetic chemists.
Ivanovich, Ryan A.
core +1 more source