Results 31 to 40 of about 57,276 (400)
Modeling of Isocyanate Synthesis by the Thermal Decomposition of Carbamates
Computation, 2020 The presented work is devoted to isocyanate synthesis by the thermal decomposition of carbamates model. The work describes the existing isocyanate-obtaining processes and the main problems in the study of isocyanate synthesis by the thermal decomposition
Ratmir Dashkin +7 more
doaj +1 more source
Triazolinediones as highly enabling synthetic tools [PDF]
, 2016 Triazolinediones (TADs) are unique reagents in organic synthesis that have also found wide applications in different research disciplines, in spite of their somewhat "exotic" reputation.
Billiet, Stijn +5 more
core +1 more source
Gallium "Shears" for C=N and C=O Bonds of Isocyanates.
Chemistry, 2019 Digallane [L1 Ga-GaL1 ] (1, L1 =dpp-bian=1,2-[(2,6-iPr2 C6 H3 )NC]2 C12 H6 ) reacts with RN=C=O (R=Ph or Tos) by [2+4] cycloaddition of the isocyanate C=N bonds across both of its C=C-N-Ga fragments to afford [L1 (O=C-NR)Ga-Ga(RN-C=O)L1 ] (R=Ph, 3; R=Tos,
V. A. Dodonov +7 more
semanticscholar +1 more source
Antitrust Aspects of Transatlantic Investment [PDF]
, 1969 In this diploma work a discrete cubic nonlinear Schrödinger equation (DNLS) is used as a model for the evolution of the electric field in a system of coupled waveguides with nonlinear index of refraction.The DNLS is inferred from Maxwell’s equations by ...
Fugate, Wilbur L.
core +4 more sources
Molbank, 2020 The synthesis of a wide variety of 3-trifluoromethyl-5,6-dihydro-[1,2,4]triazolo pyrazine derivatives, by the treatment of 3-trifluoromethyl-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-α]pyrazine hydrochloride with an array of isocyanates in the presence of ...
Rajaiah Raveesha +2 more
doaj +1 more source
Identification of pre-biotic molecules containing Peptide-like bond in a hot molecular core, G10.47+0.03 [PDF]
The Astrophysical Journal, 895, 2, 2020, 2020 After hydrogen, oxygen, and carbon, nitrogen is one of the most chemically active species in the interstellar medium (ISM). Nitrogen bearing molecules have great importance as they are actively involved in the formation of biomolecules. Therefore, it is essential to look for nitrogen-bearing species in various astrophysical sources, specifically around
arxiv +1 more source
Occupational exposure to selected isocyanates in Polish industry
Medycyna Pracy, 2015 Background: Isocyanates constitute a group of highly reactive, low molecular weight chemicals used worldwide for polyurethane manufacturing. The occupational exposure to these compounds is a major cause of occupational asthma, thus it is very important ...
Sławomir Brzeźnicki +1 more
doaj +1 more source
Alkyl Bromides as Mild Hydride Sources in Ni-Catalyzed Hydroamidation of Alkynes with Isocyanates.
Journal of the American Chemical Society, 2016 A catalytic hydroamidation of alkynes with isocyanates using alkyl bromides as hydride sources has been developed. The method turns parasitic β-hydride elimination into a strategic advantage, rapidly affording acrylamides with excellent chemo- and ...
Xueqiang Wang +3 more
semanticscholar +1 more source
Diisocyanates influence models of atopic dermatitis through direct activation of TRPA1.
PLoS ONE, 2023 We recently used EPA databases to identify that isocyanates, most notably toluene diisocyanate (TDI), were the pollutant class with the strongest spatiotemporal and epidemiologic association with atopic dermatitis (AD).
Manoj Yadav +7 more
doaj +2 more sources
Beilstein Journal of Organic Chemistry, 2013 A fast and efficient protocol for the synthesis of N,N'-disubstituted urea derivatives from alkyl halides and primary or secondary amines has been developed.
Diego Carnaroglio +5 more
doaj +1 more source