Chiral phosphines in nucleophilic organocatalysis
This review discusses the tertiary phosphines possessing various chiral skeletons that have been used in asymmetric nucleophilic organocatalytic reactions, including annulations of allenes, alkynes, and Morita–Baylis–Hillman (MBH) acetates, carbonates ...
Yumei Xiao+3 more
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Hydroxypropyltrimethyl ammonium chitosan halogenated acetates were successfully synthesized from six different haloacetic acids and hydroxypropyltrimethyl ammonium chloride chitosan (HACC) with high substitution degree, which are hydroxypropyltrimethyl ...
Yingqi Mi+7 more
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Descriptors for terpene esters from chromatographic and partition measurements: Estimation of human odor detection thresholds [PDF]
We have used gas chromatographic retention data together with other data to obtain Abraham descriptors for 30 terpene esters. These include the air-water partition coefficient, as log Kw, for which no experimental values are available for any terpene ...
Abraham, Michael H+2 more
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Electrochemical vicinal oxyazidation of α-arylvinyl acetates
α-Azidoketones are valuable and versatile building blocks in the synthesis of various bioactive small molecules. Herein, we describe an environmentally friendly and efficient electrochemical vicinal oxyazidation protocol of α-arylvinyl acetates to afford
Yi-Lun Li+3 more
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Synthesis and Biological activity of 4-(4,6-Disubstituted-pyrimidin-2-yloxy)phenoxy Acetates
Ten novel 4-(4,6-dimethoxypyrimidin-2-yloxy)phenoxy acetates and 4-(4,6-dimethylpyrimidin-2-yloxy)phenoxy acetates were synthesized with hydroquinone, 2-methylsulfonyl-4,6-disubstituted-pyrimidine and chloroacetic ester as starting materials.
Xinhuan Teng+3 more
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Silylation of Carbohydrate Syrups [PDF]
Introduction Carbohydrates are usually difficult to analyze in solutions. Gas chromatography provides a suitable means for analysis. However most carbohydrate compounds are not volatile enough for use by this method.
Gorwitz, Mark
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Experimental and theoretical study of the thermal decomposition of ethyl acetate during fast pyrolysis [PDF]
The thermal decomposition of ethyl acetate was experimentally studied in a newly designed fast pyrolysis set-up. The results were compared to theoretical calculations and literature values in order to proof the experimental concept.
Almeida Streitwieser, Daniela+4 more
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Reasoned opinion on the modification of the existing MRL for guazatine in citrus fruits
In accordance with Article 6 of Regulation (EC) No 396/2005, the United Kingdom, hereafter referred to as the evaluating Member State (EMS), received an application from Exponent International Ltd., on behalf of ICA International Chemicals (PTY) Ltd., to
European Food Safety Authority
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Abilities of some higher plants to hydrolyze the acetates of phenols and aromatic-aliphatic alcohols
In the biotransformations carried out under the same conditions, the whole intact plants of Spirodela punctata, Nephrolepis exaltata, Cyrtomium falcatum, Nephrolepis cordifolia and the suspension cultures of Helianthus tuberosus, Daucus carota and ...
Agnieszka Mironowicz+3 more
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Carbohydrates in hot water extracts of soil aggregates as affected by long-term management [PDF]
Microbial carbohydrates are immediate by-products of microbial metabolism and play an important role in the formation and stabilization of soil structure.
Cheshire M.V.+5 more
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