40593-13-3Relevant academic research and scientific papers
Strategy for specific isotope ratio determination by quantitative NMR on symmetrical molecules: application to glycerol
Caytan, Elsa,Cherghaoui, Younes,Barril, Celia,Jouitteau, Catherine,Rabiller, Claude,Remaud, Gerald S.
, p. 1622 - 1624 (2006)
The strategy for the measurement of the site-specific isotope ratios by NMR within a symmetrical molecule is illustrated by the determination of the site-specific 13C content in glycerol on the basis of (i) a selective derivatisation of glycerol, carried out by a lipase (Candida antarctica) to overcome the symmetry of the molecule, (ii) purification of the (R)-monobenzoate glycerol with a high enantiomeric excess and (iii) use of this derivative for quantitative 13C NMR spectroscopy for the determination of 13C isotopomer concentrations.
COMPOUNDS FOR TREATING OR INHIBITING RECURRENCE OF ACUTE MYELOID LEUKEMIA
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, (2021/09/26)
Provided herein are compounds for treating acute myeloid leukemia or inhibiting recurrence of acute myeloid leukemia and for inhibiting growth of and/or killing leukemic stem cells.
Pd-Colloids-Catalyzed/Ag2O-Oxidized General and Selective Esterification of Benzylic Alcohols
Sable, Vaibhav,Shah, Jagrut,Sharma, Anuja,Kapdi, Anant R.
supporting information, p. 2639 - 2647 (2019/07/08)
Palladium colloids obtained from the degradation of Hermann–Beller palladacycle proved to be an efficient catalytic system in combination with silver oxide as a selective oxidant for the oxidative esterification of differently substituted benzyl alcohols in MeOH as solvent. Excellent reactivity exhibited by the catalytic system also allowed the alcoholic coupling partner to be changed from MeOH to a wide range of alcohols having diverse functionalities. The mildness of the developed protocol also made it possible to employ propargyl alcohol as the coupling partner without any observation of any interference of the terminal alkyne. Selective oxidative coupling of a primary alcoholic functional group over secondary in the case of glycols and glycerols was also made possible using the developed catalyst system. To test the relevancy of Pd/Ag combined catalysis mixed Pd/Ag colloids were synthesized, characterized by TEM, XRD and XPS and applied to oxidative-esterification successfully.
A green and convenient method for regioselective mono and multiple benzoylation of diols and polyols
Zhang, Xiaoling,Ren, Bo,Ge, Jiantao,Pei, Zhichao,Dong, Hai
, p. 1005 - 1010 (2016/02/03)
An efficient method for regioselective benzoylation of diols and polyols was developed. The benzoylation is catalyzed by only 0.2 equiv of benzoate anion in acetonitrile with the addition of a stoichiometric amount of benzoic anhydride under very mild condition, leading to high yields. Compared with all other methods, this method shows particular advantage in regioselective multiple benzoylation of polyols, and in avoiding the use of any metal-based catalysts and any amine bases, which is more environment-friendly.
Selective esterifications of primary alcohols in a water-containing solvent
Wang, Yong,Aleiwi, Bilal A.,Wang, Qinghui,Kurosu, Michio
supporting information, p. 4910 - 4913,4 (2012/12/12)
Oxyma and an oxyma derivative, (2,2-dimethyl-1,3-dioxolan-4-yl)methyl 2-cyano-2-(hydroxyimino)acetate (5b), displayed a remarkable effect on selective esterifications of primary alcohols. A wide range of carboxylic acids could be esterified with primary alcohols by using EDCI, NaHCO3, and Oxyma or Oxyma derivative 5b in 5% H2O-CH3CN. Oxyma derivative 5b is particularly useful, since it could be removed after the reaction via a simple basic or an acidic aqueous workup procedure.
Selective esterifications of primary alcohols in a water-containing solvent
Wang, Yong,Aleiwi, Bilal A.,Wang, Qinghui,Kurosu, Michio
supporting information, p. 4910 - 4913 (2013/01/15)
Oxyma and an oxyma derivative, (2,2-dimethyl-1,3-dioxolan-4-yl)methyl 2-cyano-2-(hydroxyimino)acetate (5b), displayed a remarkable effect on selective esterifications of primary alcohols. A wide range of carboxylic acids could be esterified with primary alcohols by using EDCI, NaHCO3, and Oxyma or Oxyma derivative 5b in 5% H2O-CH3CN. Oxyma derivative 5b is particularly useful, since it could be removed after the reaction via a simple basic or an acidic aqueous workup procedure.
NOVEL PREPARATION OF 1,3-PROPANEDIYL BIS: A ONE-STEP NUCLEOPHILIC SYNTHESIS OF SYMMETRIC 1,3-DIGLYCERIDES
Brown, Alan B.,Whitlock, Howard W.
, p. 3497 - 3508 (2007/10/02)
The title compound 1 was prepared by treatment of epibromohydrin with carboxylic acid 2 in the presence of tertiary amine; the reaction is a new nucleophilic synthesis of symmetric 1,3-diglycerides.
AN ASYMMETRIC SYNTHESIS OF GLYCEROL DERIVATIVES BY THE ENANTIOSELECTIVE ACYLATION OF PROCHIRAL GLYCEROL
Ichikawa, Junji,Asami, Masatoshi,Mukaiyama, Teruaki
, p. 949 - 952 (2007/10/02)
Optically active glycerol derivatives are obtained in up to 84percent e.e. by the selective acylation of the tin(II) alkoxides generated from 2-O-arylsulfonylglycerols and 1,1'-dimethylstannocene or (mehthylcyclopentadienyl)tin(II) chloride by the use of a chiral diamine derived from (S)-proline as a ligand.
MECHANISM OF THE REACTION OF GLYCIDYL ESTERS WITH CARBOXYLIC ACIDS
Klebanov, M. S.,Kir'yazev, F. Yu.,Chervinskii, A. Yu.,Shologon, I. M.
, p. 2193 - 2196 (2007/10/02)
The kinetics of the reactions of 1-phenoxy-2,3-epoxypropane and 2,3-epoxypropylbenzoate with carboxylic acids were investigated.A new reaction mechanism is proposed to explain the anomalously high reactivity of the glycidyl esters.The mechanism involves protonation of the oxygen of the carbonyl group in the ester followed by intramolecular electrophilic attack on the oxirane oxygen by the carbonyl carbon atom, accompanied by opening of the epoxide ring and transfer of the acyl fragment in the glycidyl ester molecule.
