394963

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Simultaneous determination of cocaine and benzoyl ecgonine in urine by gas chromatography with on-column alkylation.

N C Jain et al.

Journal of forensic sciences, 22(1), 7-16 (1977-01-01)

A gas chromatographic procedure has been developed for the simultaneous determination of cocaine and benzoyl ecgonine in urine specimens. The two drugs are extracted by isopropanol/chloroform from urine samples saturated with a bisalt buffer. The organic extract is evaporated to

Methylation of heterocyclic compounds containing NH, SH and/or OH groups by means of N, N-dimethylformamide dimethyl acetal.

Stanovnik, Branko, et al.

Australian Journal of Chemistry, 34, 1729-1738 (1981)

W.J.A. VandenHeuval and V.F. Gruber

Journal of Chromatography A, 112, 513-513 (1975)

Chirality and the origin of life: in situ enantiomeric separation for future space missions.

C Rodier et al.

Chirality, 14(6), 527-532 (2002-07-12)

Two different methods of derivatization were studied in order to select and optimize one for the in situ enantiomeric separation of amino acids present in Martian samples. The method, using DMF-DMA [N,N-dimethylformamide dimethyl acetal], is simple and easily automated. However

Anabolic responses to acute and chronic resistance exercise are enhanced when combined with aquatic treadmill exercise.

Brad S Lambert et al.

American journal of physiology. Endocrinology and metabolism, 308(3), E192-E200 (2014-11-27)

Aquatic treadmill (ATM) running may simultaneously promote aerobic fitness and enhance muscle growth when combined with resistance training (RT) compared with land-treadmill (LTM) running. Therefore, we examined acute and chronic physiological responses to RT, concurrent RT-LTM, and concurrent RT-ATM. Forty-seven

Aldrichimica Acta, 18, 59-59 (1985)

Search for evidence of life in space: analysis of enantiomeric organic molecules by N,N-dimethylformamide dimethylacetal derivative dependant Gas Chromatography-Mass Spectrometry.

C Freissinet et al.

Journal of chromatography. A, 1217(5), 731-740 (2009-12-29)

Within the context of the future space missions to Mars (MSL 2011 and Exomars 2016), which aim at searching for traces of life at the surface, the detection and quantitation of enantiomeric organic molecules is of major importance. In this

Design, Synthesis, and Biological Evaluation of Novel Quinazoline Derivatives as Anti-inflammatory Agents against Lipopolysaccharide-induced Acute Lung Injury in Rats.

Jie Hu et al.

Chemical biology & drug design, 85(6), 672-684 (2014-10-21)

Quinazoline has been reported to exhibit multiple bioactivities. The aim of this study was to discover new quinazoline derivatives with preventive effect on lipopolysaccharide-induced acute lung injury via anti-inflammatory actions. Thirty-three 4-amino quinazolin derivatives were synthesized and screened for anti-inflammatory

GLC analysis of carbamazepine.

R J Perchalski et al.

Therapeutic drug monitoring, 2(3), 289-289 (1980-01-01)

Leo M.L. Nollet

Chromatographic Analysis of the Environment, 315-315 (2005)

Tetrahedron, 50, 2255-2255 (1994)

Derivatization of N-methyl and cyclic amino acids with dimethylformamide dimethyl acetal.

M F Grubb et al.

Journal of chromatography, 469, 191-196 (1989-05-19)

Six amino acids containing either an N-methyl or a cyclic secondary amine were converted to volatile derivatives by reaction with dimethylformamide dimethyl acetal. The amine functionalities were formylated by way of an amide acetal intermediate while the carboxylic acid groups

Microwave assisted condensation reactions of 2-aryl hydrazonopropanals with nucleophilic reagents and dimethyl acetylenedicarboxylate.

Khadijah M Al-Zaydi et al.

Molecules (Basel, Switzerland), 12(8), 2061-2079 (2007-10-26)

The reaction of methyl ketones 1a-g with dimethylformamide dimethylacetal (DMFDMA) afforded the enaminones 2a-g, which were coupled with diazotized aromatic amines 3a,b to give the corresponding aryl hydrazones 6a-h. Condensation of compounds 6a-h with some aromatic heterocyclic amines afforded iminoarylhydrazones

D. Karashima et al.

Biomedical Mass Spectrometry null

Lack of correlation between catalytic efficiency and basicity of amines during the reaction of aryl methyl ketones with DMF-DMA: an unprecedented supramolecular domino catalysis.

Anirban Sarkar et al.

Organic & biomolecular chemistry, 10(2), 281-286 (2011-11-08)

1-Methylimidazole exhibits an unusually high efficiency in promoting the reaction of aryl methyl ketones with DMF-DMA to form (2E)-1-aryl-3-dimethylamino-2-propenones which lacks correlation between the catalytic efficiency and the basicity of 1-methylimidazole in comparison to other amines. An unprecedented supramolecular domino

D.R. Knapp

Handbook of Analytical Derivatization Reactions, 398-398 (1979)

Fragmentation pathway for glutamine identification: loss of 73 Da from dimethylformamidine glutamine isobutyl ester.

Qingfen Zhang et al.

Journal of the American Society for Mass Spectrometry, 16(7), 1192-1203 (2005-06-01)

A fragmentation mechanism for the neutral loss of 73 Da from dimethylformamidine glutamine isobutyl ester is investigated. Understanding this mechanism will allow to improve the identification and quantification of 15N-labeled and unlabeled glutamine and the distinguishing of glutamine and glutamic

Synthetic Communications, 24, 1617-1617 (1994)

Synthetic Communications, 36, 3141-3141 (2006)

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