Results 351 to 360 of about 57,413 (403)
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Angewandte Chemie International Edition in English, 1969
AbstractCompounds containing the PNCO grouping can be obtained e.g. from phosphorus halides and silver cyanate or esters of N‐chloroiminocarbonic acid and by thermal decomposition of alkoxycarbonylimino‐phosphoranes. The phosphorus (V) isocyanates resemble the “carbon” isocyanates in their chemical properties, whereas the phosphorus (III) isocyanates ...
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AbstractCompounds containing the PNCO grouping can be obtained e.g. from phosphorus halides and silver cyanate or esters of N‐chloroiminocarbonic acid and by thermal decomposition of alkoxycarbonylimino‐phosphoranes. The phosphorus (V) isocyanates resemble the “carbon” isocyanates in their chemical properties, whereas the phosphorus (III) isocyanates ...
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Die Angewandte Makromolekulare Chemie, 1971
AbstractMono‐ and di‐isocyanates have been synthesized from the indigenously available raw material Cashew Nut Shell Liquid (CNSL). These isocyanates have different structural features and hence may have different reactivities. Their structures are confirmed on the basis of chemical and spectroscopic methods.
V. S. Patil, N. D. Ghatge
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AbstractMono‐ and di‐isocyanates have been synthesized from the indigenously available raw material Cashew Nut Shell Liquid (CNSL). These isocyanates have different structural features and hence may have different reactivities. Their structures are confirmed on the basis of chemical and spectroscopic methods.
V. S. Patil, N. D. Ghatge
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Russian Chemical Reviews, 1972
The review deals with the present state of the problem of the ionisation of isocyanates: cyclic di- and trimerisation, homopolymerisation, and copolymerisation of isocyanates with other monomers. The mechanisms of the processes involving various catalytic systems are considered and the results of investigations of the polymerisation of isocyanates and ...
L.I. Sarynina +2 more
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The review deals with the present state of the problem of the ionisation of isocyanates: cyclic di- and trimerisation, homopolymerisation, and copolymerisation of isocyanates with other monomers. The mechanisms of the processes involving various catalytic systems are considered and the results of investigations of the polymerisation of isocyanates and ...
L.I. Sarynina +2 more
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Biomarkers for Isocyanate Exposure: Synthesis of Isocyanate DNA Adducts
Chemical Research in Toxicology, 2006Isocyanates are important intermediates in industrial manufacturing. DNA adducts and protein adducts are important tools to biomonitor people exposed to xenobiotics. In the present work, the formation of DNA adducts deriving from 4-chlorophenyl isocyanate (4CPI) and 4-methylphenyl isocyanate (4MPI) were explored. The adducts of 4CPI and/or 4MPI with 2'-
Beyerbach, A, Sabbioni, G, Farmer, PB
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Isocyanates and isothiocyanates as versatile platforms for accessing (thio)amide-type compounds.
Organic and biomolecular chemistry, 2016The addition of carbon (Grignard and organolithium reagents) and hydride nucleophiles (Schwartz reagent) to isocyanates and isothiocyanates constitutes a versatile, direct and high yielding approach to the synthesis of functionalized (thio)amide ...
Vittorio Pace +3 more
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Ruthenium(II)-Catalyzed Regioselective Ortho Amidation of Imidazo Heterocycles with Isocyanates.
Journal of Organic Chemistry, 2016Direct ortho amidation at the phenyl ring of 2-phenylimidazo heterocycles with aryl isocyanates has been achieved via a chelation-assisted cationic ruthenium(II) complex catalyzed mechanism.
S. Shakoor +5 more
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Determination of airborne isocyanates
Analytical and Bioanalytical Chemistry, 2006Isocyanates are important in industrial hygiene and workplace monitoring. Owing to their severe acute toxicity and sensitizing properties, analytical methods with high sampling efficiency and sensitivity in the low ppb to ppt range are required. The reactivity of isocyanates necessitates initial derivatization with nucleophilic agents--usually amines ...
Uwe Karst +4 more
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The phosphinoboration of carbodiimides, isocyanates, isothiocyanates and CO2.
Dalton Transactions, 2017The transition metal-free addition of phosphinoboronate ester Ph2PBpin (pin = 1,2-O2C2Me4) to heterocumulenes including carbodiimides, isocyanates, isothiocyanates and carbon dioxide has been investigated.
S. Geier +6 more
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Chemistry, 2015
An efficient method for the enantioselective construction of β-substituted β-vinylglycinol derivatives through palladium-catalyzed decarboxylative cycloaddition of vinylethylene carbonates with isocyanates was developed.
Ajmal Khan +5 more
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An efficient method for the enantioselective construction of β-substituted β-vinylglycinol derivatives through palladium-catalyzed decarboxylative cycloaddition of vinylethylene carbonates with isocyanates was developed.
Ajmal Khan +5 more
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