نتایج جستجو برای: acetates esters

تعداد نتایج: 29185  

Journal: :Fermentation 2021

Yeast plays an essential role in winemaking. Saccharomyces cerevisiae strains involved fermentation determine the chemical and sensory characteristics of wines. S. XG3, isolated Galicia (NW Spain), has desirable oenological potential, which been proved at a pilot scale to produce quality This study applies XG3 as active dry yeast industrial for Treixadura wine elaboration, compares it with comm...

Journal: :Synlett 2011

Journal: :Journal of Industrial & Engineering Chemistry 1920

Journal: :Organic letters 2008
Shi Tang Peng Peng Zhi-Qiang Wang Bo-Xiao Tang Chen-Liang Deng Jin-Heng Li Ping Zhong Nai-Xing Wang

A novel palladium-catalyzed oxidative C-H functionalization protocol for the synthesis of (2-oxoindolin-3-ylidene)methyl acetates has been developed. In the presence of Pd(OAc)2 and PhI(OAc)2, a variety of N-arylpropiolamides underwent the C-H functionalization reaction with acids to afford the corresponding (E)-(2-oxoindolin-3-ylidene)methyl acetates selectively in moderate to excellent yields.

2005
Sachiko Tsukamoto Yuko Yamashita Tomihisa Ohta

The extract of the sea hare, Aplysia kurodai, showed cytotoxicity against HeLa cells and antibacterial activity against Staphylococcus aureus. Bioassay-guided purification afforded four active compounds, which were identified to be laurinterol, laurinterol acetate, debromolaurinterol, and debromolaurinterol acetate by spectroscopic analysis. Although the acetates were derived from laurinterol a...

Journal: :Journal of the American Chemical Society 2006
Liming Zhang Shaozhong Wang

A highly efficient method for the synthesis of versatile cyclopentenones from readily available enynyl acetates via tandem Au(I)-catalyzed 3,3-rearrangement and the Nazarov reaction is developed. Significant substrate flexibility and excellent control of the double bond position in the cyclopentenone ring render this an attractive method for cyclopentenone synthesis.

Journal: :Chemical communications 2014
Keisuke Nogi Tetsuaki Fujihara Jun Terao Yasushi Tsuji

The cobalt-catalyzed carboxylation of propargyl acetates with CO2 (1 atm) is described. The reaction proceeds at room temperature in the presence of Mn powder as a reducing reagent. Various propargyl acetates are converted to the corresponding carboxylic acids in good to high yields.

2006
Luiz F. Silva Eliane C. Pedrozo Helena M. C. Ferraz

The indan skeleton is present in a variety of molecules with important biological activity, including the wellknown Indinavir and Aricept. Our research group has investigated approaches to obtain indans from 1,2dihydronaphthalenes, using a thallium(III)-promoted ring contraction reaction. During these studies, we found that a side chain at the double bond has a strong influence in the reaction ...

2013
R. A. Galbreath M. H. Benn V. A. Holt

Sex Pheromone, Tetradecenyl Acetates, Planotortrix excessana, Tortricidae, Sibling Species Planotortrix excessana was found to include moths of two distinct pheromone-types which were not mutually attractive. Tetradecyl acetate and (Z)-8-tetradecenyl acetate were identified as pheromone components in one, and two other tetradecenyl acetates, probably (Z)-5and (Z)-7tetradecenyl acetate, in the o...

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