Ethyl(methyl)dioxirane as an efficient reagent for the oxidation of nucleoside phosphites into phosphates under nonbasic anhydrous conditions A convenient method for the oxidation of nucleoside phosphites into phosphates under nonbasic and nonaqueous conditions using commercially available ethyl(... M Kat...
A regioselective bromohydroxylation reaction of simple allenes affording 2-bromoalken-3-ols in moderate-to-good yields has been developed by using NBS as the electrophilic reagent in a mixture of 1,4-dioxane/H2O (1:1) at room temperature. Through this study it has been concluded that the ...
基于紫外光谱的甲基菲罗啉NBS溴代反应研究_李森
Ethanol (analytical grade) and hexane (analytical grade) were obtained from Aladdin Reagent. The double-distilled water (DDW) (≥18.3 MΩ) was taken from a Millipore system. All chemicals and solvents used in this experiment were used directly without additional treatment. The morphology and size...
A variety of structurally novel phosphoalkoxy ester derivatives were prepared via highly regio- and diastereoselective four-component reaction involving olefin, cyclic ether, halogen reagent and organic phosphate. All components can be varied flexibly and moderate to excellent yields were obtained at room...
GDK Kumar,S Baskaran - 《Journal of Organic Chemistry》 被引量: 139发表: 2005年 Deprotection of silyl ethers using 2,3-dichloro-5,6-dicyano-p-benzoquinone In the presence of a catalytic amount of 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), triethylsilyl (TES) and tert-butyldimethylsi...
2016科学实验基于紫外光谱的甲基菲罗啉 NBS 溴代反应研究李 森,李朋,韩国志南京 210009) (南京工业大学化学与分子工程学院 ,江苏摘*要: 自由基卤代是有机合成中一类重要的反应 。其中,溴代反应由于条件温和以及实现途径的多样化,研究最为深入 。在目前的溴代试剂中 ,N-溴代丁二酰亚胺 (NBS)具有成本低 、操作...
* aShanghai Key Laboratory of Functional Materials Chemistry and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China bShanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, The Chinese...
An iterative bromination and debromination of N-acylated amino acid derivatives with NBS as the sole reagent cleanly led to various substituted oxazoles.doi:10.1002/ejoc.201300421Surendar Reddy BathulaPharmaceutics Division, CSIR – Central Drug Research Institute, Lucknow 226001, India, http://www....
A new and simple route for the synthesis of thioesters starting from carboxylic acids and alcohols is reported by using tetrathiomolybdate as the key sulfur transfer reagent. Triphenylphosphane and N-bromosuccinimide were used for the activation of the carboxylic acid and alcohol in the same pot ...