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Quoted phrases not found in phrase index: "1,1,1-trimethoxyethane", "methyltrimethoxymethane"
Page 1
Kinetics and mechanisms of the homogeneous, unimolecular gas-phase elimination of trimethyl orthoacetate and trimethyl orthobutyrate.
Márquez E, Dominguez R, Tosta M, Chuchani G. Márquez E, et al. J Phys Chem A. 2008 Nov 27;112(47):12140-2. doi: 10.1021/jp8074942. J Phys Chem A. 2008. PMID: 18973316
The rate coefficients are expressed by the Arrhenius equation: for trimethyl orthoacetate, log k1 (s(-1)) = [(13.58 +/- 0.10) - (194.7 +/- 1.2) (kJ mol(-1))](2.303RT)(-1)r = 0.9998; and for trimethyl orthobutyrate, log k1(s(-1)) = [(13.97 +/- 0.37) - (195.3 +/- 1.6) …
The rate coefficients are expressed by the Arrhenius equation: for trimethyl orthoacetate, log k1 (s(-1)) = [(13.58 +/- 0.10) …
Synthesis and Evaluation of Novel 2H-Benzo[e]-[1,2,4]thiadiazine 1,1-Dioxide Derivatives as PI3Kδ Inhibitors.
Gong YP, Tang LQ, Liu TS, Liu ZP. Gong YP, et al. Molecules. 2019 Nov 25;24(23):4299. doi: 10.3390/molecules24234299. Molecules. 2019. PMID: 31775363 Free PMC article.
After the reduction of nitro group in N-(2,6-dimethylphenyl)-2-nitrobenzenesulfonamide 5 and N-(2,6-dimethylphenyl)-2-nitro-5-fluorobenzenesulfonamide 6, the resulting 2-aminobenzenesulfonamides were reacted with trimethyl orthoacetate to give the 3-methyl-2H-benzo[ …
After the reduction of nitro group in N-(2,6-dimethylphenyl)-2-nitrobenzenesulfonamide 5 and N-(2,6-dimethylphenyl)-2-nitro-5-fluorobenzenes …
Trimethyl Orthoacetate and Ethylene Glycol Mono-Vinyl Ether as Enolate Surrogates in Enantioselective Iridium-Catalyzed Allylation.
Sempere Y, Carreira EM. Sempere Y, et al. Angew Chem Int Ed Engl. 2018 Jun 25;57(26):7654-7658. doi: 10.1002/anie.201803558. Epub 2018 May 23. Angew Chem Int Ed Engl. 2018. PMID: 29718576
Trimethyl orthoacetate and ethylene glycol mono-vinyl ether are employed in iridium-catalyzed enantioselective allylation reactions. ...
Trimethyl orthoacetate and ethylene glycol mono-vinyl ether are employed in iridium-catalyzed enantioselective allylation reac
Long-term detection of clodronate in equine plasma by liquid chromatography-tandem mass spectrometry.
Garcia P, Perot I, Loup B, Balssa F, Jaubert M, Delcourt V, Dujardin C, Popot MA, Bailly-Chouriberry L. Garcia P, et al. Drug Test Anal. 2021 Aug;13(8):1527-1534. doi: 10.1002/dta.3050. Epub 2021 May 12. Drug Test Anal. 2021. PMID: 33870655
Automated sample preparation comprised a solid phase extraction with weak anion exchange properties on microplate. After methylation of the residue with trimethyl orthoacetate, analysis was conducted by high-performance liquid chromatography-tandem mass spectrometry …
Automated sample preparation comprised a solid phase extraction with weak anion exchange properties on microplate. After methylation of the …
Discovery of potent 4-aminoquinoline hydrazone inhibitors of NRH:quinoneoxidoreductase-2 (NQO2).
Hussein B, Ikhmais B, Kadirvel M, Magwaza RN, Halbert G, Bryce RA, Stratford IJ, Freeman S. Hussein B, et al. Eur J Med Chem. 2019 Nov 15;182:111649. doi: 10.1016/j.ejmech.2019.111649. Epub 2019 Aug 27. Eur J Med Chem. 2019. PMID: 31514018
The syntheses utilised p-anisidine with Meldrum's acid and trimethyl orthoacetate or trimethyl orthobenzoate to give the 4-hydrazin-quinoline scaffold, which was derivatised with aldehydes or acid chlorides to give hydrazone or hydrazide analogues, respectively. ...
The syntheses utilised p-anisidine with Meldrum's acid and trimethyl orthoacetate or trimethyl orthobenzoate to give the 4-hyd …
A simple method for the determination of glyphosate, glufosinate and their metabolites in biological specimen by liquid chromatography/tandem mass spectrometry: an application for forensic toxicology.
Ohara T, Yoshimoto T, Natori Y, Ishii A. Ohara T, et al. Nagoya J Med Sci. 2021 Aug;83(3):567-587. doi: 10.18999/nagjms.83.3.567. Nagoya J Med Sci. 2021. PMID: 34552290 Free PMC article.
Herbicide-containing specimens were highly diluted, evaporated to dryness, and derivatized with acetate/acetic anhydride and trimethyl orthoacetate for 30 min. at 120C. Our optimized LC conditions successfully separated the target analytes, with acceptable lineariti …
Herbicide-containing specimens were highly diluted, evaporated to dryness, and derivatized with acetate/acetic anhydride and trimethyl
Synthesis and evaluation of 2-amino-9-(3-acyloxymethyl-4-alkoxycarbonyloxybut-1-yl)purines and 2-amino-9-(3-alkoxycarbonyloxymethyl-4-alkoxycarbonyloxybut-1- yl)purines as potential prodrugs of penciclovir.
Kim DK, Lee N, Ryu DH, Kim YW, Kim JS, Chang K, Im GJ, Choi WS, Cho YB, Kim KH, Colledge D, Locarnini S. Kim DK, et al. Bioorg Med Chem. 1999 Aug;7(8):1715-25. doi: 10.1016/s0968-0896(99)00086-3. Bioorg Med Chem. 1999. PMID: 10482463
A series of 2-amino-9-(3-acyloxymethyl-4-alkoxycarbonyloxybut-1-yl)purin es (1-8) and 2-amino-9-(3-alkoxycarbonyl-oxymethyl-4-alkoxycarbonyloxybut -1-yl)purines (9-12) were synthesized as potential prodrugs of penciclovir. Treatment of 6-deoxypenciclovir with trimethyl
A series of 2-amino-9-(3-acyloxymethyl-4-alkoxycarbonyloxybut-1-yl)purin es (1-8) and 2-amino-9-(3-alkoxycarbonyl-oxymethyl-4-alkoxycarbonyl …
Novel approach for the simultaneous analysis of glyphosate and its metabolites.
Kudzin ZH, Gralak DK, Drabowicz J, Luczak J. Kudzin ZH, et al. J Chromatogr A. 2002 Feb 15;947(1):129-41. doi: 10.1016/s0021-9673(01)01603-x. J Chromatogr A. 2002. PMID: 11873992
This includes a preliminary 31P NMR analysis of mixtures of PMG, MPA, AMPA and MAMPA, their further derivatization to volatile phosphonates by means of the trifluoroacetic acid-trifluoroacetic anhydride-trimethyl orthoacetate reagent and subsequent MS [chemical ioni …
This includes a preliminary 31P NMR analysis of mixtures of PMG, MPA, AMPA and MAMPA, their further derivatization to volatile phosphonates …
Solid-phase extraction of phosphorous-containing amino acid herbicides from biological specimens with a zirconia-coated silica cartridge.
Watanabe D, Ohta H, Yamamuro T. Watanabe D, et al. J Chromatogr B Analyt Technol Biomed Life Sci. 2014 Oct 15;969:69-76. doi: 10.1016/j.jchromb.2014.08.004. Epub 2014 Aug 12. J Chromatogr B Analyt Technol Biomed Life Sci. 2014. PMID: 25151332
We extracted PAAHs from serum and urine samples. The PAAHs were derivatized with trimethyl orthoacetate-acetic acid and analyzed by ultra-performance liquid chromatography/tandem mass spectrometry (UPLC-MS/MS). ...
We extracted PAAHs from serum and urine samples. The PAAHs were derivatized with trimethyl orthoacetate-acetic acid and analyz …
Field dissipation and storage stability of glufosinate ammonium and its metabolites in soil.
Zhang Y, Wang K, Wu J, Zhang H. Zhang Y, et al. Int J Anal Chem. 2014;2014:256091. doi: 10.1155/2014/256091. Epub 2014 Oct 13. Int J Anal Chem. 2014. PMID: 25374604 Free PMC article.
Soil samples were extracted with ammonium hydroxide solution 5% (v/v), concentrated, and reacted with trimethyl orthoacetate (TMOA) in the presence of acetic acid for derivatization. ...
Soil samples were extracted with ammonium hydroxide solution 5% (v/v), concentrated, and reacted with trimethyl orthoacetate ( …
22 results