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Page 1
Gallium "Shears" for C=N and C=O Bonds of Isocyanates.
Dodonov VA, Chen W, Zhao Y, Skatova AA, Roesky PW, Wu B, Yang XJ, Fedushkin IL. Dodonov VA, et al. Chemistry. 2019 Jun 21;25(35):8259-8267. doi: 10.1002/chem.201900517. Epub 2019 May 13. Chemistry. 2019. PMID: 30892746
In the presence of Na metal, the related digallane [L(2) Ga-GaL(2) ] (2; L(2) =dpp-dad=[(2,6-iPr(2) C(6) H(3) )NC(CH(3) )](2) ) is converted into the gallium(I) carbene analogue [L(2) Ga:](-) (2 A), which undergoes a variety of reactions with isocyanate substrates. These include …
In the presence of Na metal, the related digallane [L(2) Ga-GaL(2) ] (2; L(2) =dpp-dad=[(2,6-iPr(2) C(6) H(3) )NC(CH(3) )](2) ) is converted …
Preparation and characterization of Bis-GMA-free dental composites with dimethacrylate monomer derived from 9,9-Bis[4-(2-hydroxyethoxy)phenyl]fluorene.
He J, Kopperud HM. He J, et al. Dent Mater. 2018 Jul;34(7):1003-1013. doi: 10.1016/j.dental.2018.03.007. Epub 2018 Apr 13. Dent Mater. 2018. PMID: 29661580
METHODS: Bis-EFMA was synthesized through reaction between 9,9-bis[4-(2-hydroxyethoxy)-phenyl]fluorene and 2-(methacryloyloxy)ethyl isocyanate. Experimental Bis-EFMA-based resin (Bis-EFMA/TEGDMA=50/50, wt....
METHODS: Bis-EFMA was synthesized through reaction between 9,9-bis[4-(2-hydroxyethoxy)-phenyl]fluorene and 2-(methacryloyloxy)ethyl …
Synthesis and Reactivity of N-Heterocyclic Carbene Coordinated Formal Germanimidoyl-Phosphinidenes.
Chen H, Chen Y, Li T, Wang D, Xu L, Tan G. Chen H, et al. Inorg Chem. 2023 Dec 25;62(51):20906-20912. doi: 10.1021/acs.inorgchem.3c03353. Epub 2023 Dec 14. Inorg Chem. 2023. PMID: 38095884
Studies of the chemical properties revealed that the reactions preferred to occur at the GeN double bond, which underwent [2 + 2] cycloadditions with CO(2) and ethyl isocyanate, and coordinated with coinage metals through the nitrogen atom....
Studies of the chemical properties revealed that the reactions preferred to occur at the GeN double bond, which underwent [2 + 2] cycloaddit …
Synthesis, Characterization, Antimicrobial and Antitumor Activities of Sucrose Octa(N-ethyl)carbamate.
Raposo CD, Petrova KT, Barros MT, Calhelha RC, Sokovic M, Ferreira IC. Raposo CD, et al. Med Chem. 2016;12(1):22-9. doi: 10.2174/1573406410666150807111029. Med Chem. 2016. PMID: 26256586
Sucrose octa(N-ethyl)carbamate was synthesized directly from sucrose and ethyl isocyanate, and its structure was confirmed by various analytical methods, such as (1)H and (13)C NMR, FTIR, m.p., MS, and optical rotation. ...
Sucrose octa(N-ethyl)carbamate was synthesized directly from sucrose and ethyl isocyanate, and its structure was confirmed by …
Millimeter wave spectra of ethyl isocyanate and searches for it in Orion KL and Sgr B2.
Kolesniková L, Alonso ER, Tercero B, Cernicharo J, Alonso JL. Kolesniková L, et al. Astron Astrophys. 2018 Aug;616:A173. doi: 10.1051/0004-6361/201833223. Epub 2018 Sep 7. Astron Astrophys. 2018. PMID: 30369619 Free PMC article.
CONTEXT: Relatively high abundances of methyl isocyanate (CH(3)NCO), a methyl derivative of isocyanic acid (HNCO), found in the Orion KL and Sgr B2 molecular clouds suggest that its ethyl derivative, ethyl isocyanate (CH(3)CH(2)NCO), may also be present. AIMS: The a …
CONTEXT: Relatively high abundances of methyl isocyanate (CH(3)NCO), a methyl derivative of isocyanic acid (HNCO), found in the Orion KL and …
Synthesis and Reactivity of Heteroleptic Ga-P-C Allyl Cation Analogues.
Li B, Wölper C, Haberhauer G, Schulz S. Li B, et al. Angew Chem Int Ed Engl. 2021 Jan 25;60(4):1986-1991. doi: 10.1002/anie.202012595. Epub 2020 Nov 23. Angew Chem Int Ed Engl. 2021. PMID: 33034935 Free PMC article.
The reaction of 4 with 4-dimethylaminopyridine (dmap) to adduct 6 confirms the strong electrophilic nature of the gallium center, whereas 5 reacts with ethyl isocyanate with C-C bond formation to the gamma-C atom of the beta-diketiminate ligand and formation of comp …
The reaction of 4 with 4-dimethylaminopyridine (dmap) to adduct 6 confirms the strong electrophilic nature of the gallium center, whereas 5 …
Validation of a solvent-free sampler for the determination of low molecular weight aliphatic isocyanates under thermal degradation conditions.
Boutin M, Lesage J, Ostiguy C, Pauluhn J. Boutin M, et al. J Occup Environ Hyg. 2005 Sep;2(9):456-61. doi: 10.1080/15459620500240626. J Occup Environ Hyg. 2005. PMID: 16091349
During the thermal degradation of 1,6-hexamethylenediiso- cyanate-based (HDI) car paint, the eight most abundant isocyanates generated are isocyanic acid, methyl isocyanate, ethyl isocyanate, propyl isocyanate, butyl isocyanate, pentyl isocyanate, hexyl isocyanate, …
During the thermal degradation of 1,6-hexamethylenediiso- cyanate-based (HDI) car paint, the eight most abundant isocyanates generated are i …
Chiral separation of pheniramine-like 3-phenyl-3-heteroarylpropylamines by CE and HPLC methods.
Schuster A, Götte C, Bernhardt G, Buschauer A. Schuster A, et al. Chirality. 2001 Jun;13(6):285-93. doi: 10.1002/chir.1033. Chirality. 2001. PMID: 11370017
On RP-18 columns the separation of the (+)-(S)-acetylmandelic acid amides of racemic 2 (R = 0.9, alpha = 1.07) and the thioureas prepared by addition of 6 to 2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyl isothiocyanate (R = 2.0, alpha = 1.20) was successful, whereas the diastereom …
On RP-18 columns the separation of the (+)-(S)-acetylmandelic acid amides of racemic 2 (R = 0.9, alpha = 1.07) and the thioureas prepared by …
Determination of complex mixtures of airborne isocyanates and amines. Part 5. Determination of low molecular weight aliphatic isocyanates as dibutylamine derivatives.
Karlsson D, Dalene M, Skarping G. Karlsson D, et al. Analyst. 1998 Jul;123(7):1507-12. doi: 10.1039/a801918e. Analyst. 1998. PMID: 9830163
A method is presented for the determination of low molecular weight aliphatic isocyanates, methyl isocyanate (MIC), ethyl isocyanate (EIC), propyl isocyanate (PIC) and butyl isocyanate (BIC), as their dibutylamine (DBA) derivatives. ...
A method is presented for the determination of low molecular weight aliphatic isocyanates, methyl isocyanate (MIC), ethyl isocyana …
Gas chromatographic method for the determination of residual monomers, 2-(acryloyloxy)ethyl isocyanate and 2-(methacryloyloxy)ethyl isocyanate, as curing agents in an ultraviolet curable adhesive.
Kim BH, Kim N, Moon DC. Kim BH, et al. J Chromatogr Sci. 2014 Feb;52(2):143-8. doi: 10.1093/chromsci/bms259. Epub 2013 Jan 27. J Chromatogr Sci. 2014. PMID: 23357043
A gas chromatographic method is described for the determination of residual 2-(acryloyloxy)ethyl isocyanate (AOI) and 2-(methacryloyloxy)ethyl isocyanate (MOI) as curing agents in an ultraviolet curable adhesive. ...
A gas chromatographic method is described for the determination of residual 2-(acryloyloxy)ethyl isocyanate (AOI) and 2-(metha …
68 results