Results 61 to 70 of about 3,221,112 (244)

Algicidal lactones from the marine Roseobacter clade bacterium Ruegeria pomeroyi

Beilstein Journal of Organic Chemistry, 2012
Volatiles released by the marine Roseobacter clade bacterium Rugeria pomeroyi were collected by use of a closed-loop stripping headspace apparatus (CLSA) and analysed by GC–MS.
Ramona Riclea, Julia Gleitzmann, Hilke Bruns, Corina Junker, Barbara Schulz, Jeroen S. Dickschat   +5 more
doaj   +1 more source

Enantioselective Synthesis of Trisubstituted Allenes via Cu(I)-Catalyzed Coupling of Diazoalkanes with Terminal Alkynes.

Journal of the American Chemical Society, 2016
A highly enantioselective synthesis of trisubstituted allenes has been achieved through Cu(I)-catalyzed cross-coupling of aryldiazoalkanes and terminal alkynes with chiral bisoxazoline ligands.
Wen-Dao Chu, Lei Zhang, Zhikun Zhang, Q. Zhou, F. Mo, Yan Zhang, J. Wang   +6 more
semanticscholar   +1 more source

Enantioselective Total Synthesis of Aspidophytine [PDF]

Organic Letters, 2003
[structure: see text] An enantioselective total synthesis of aspidophytine is described. The indole fragment bearing a cis-alkene substituent was efficiently prepared through radical cyclization of a 2-alkenylphenylisocyanide followed by Sonogashira coupling of the generated 2-iodoindole derivative with a functionalized acetylene unit.
Tohru Fukuyama, Shinjiro Sumi, Koji Matsumoto, Hidetoshi Tokuyama   +3 more
openaire   +4 more sources

Formal total syntheses of classic natural product target molecules via palladium-catalyzed enantioselective alkylation

Beilstein Journal of Organic Chemistry, 2014
Pd-catalyzed enantioselective alkylation in conjunction with further synthetic elaboration enables the formal total syntheses of a number of “classic” natural product target molecules. This publication highlights recent methods for setting quaternary and
Yiyang Liu, Marc Liniger, Ryan M. McFadden, Jenny L. Roizen, Jacquie Malette, Corey M. Reeves, Douglas C. Behenna, Masaki Seto, Jimin Kim, Justin T. Mohr, Scott C. Virgil, Brian M. Stoltz   +11 more
doaj   +1 more source

Asymmetric construction of allylicstereogenic carbon center featuring atrifluoromethyl group via enantioselective reductive fluoroalkylation

Nature Communications, 2022
The efficient construction of trifluoromethylated alkanes bearing a CF3 chiral center is of great importance in organic synthesis. Here, the authors disclose the enantioselective syntheses of α-trifluoromethylated allylic alkanes via reductive ...
Ruo-Xing Jin, Bing-Bing Wu, Kang-Jie Bian, Jian-Liang Yu, Jing-Cheng Dai, Ya-Wen Zuo, Yi-Fan Zhang, Xi-Sheng Wang   +7 more
doaj   +1 more source

Tandem Palladium and Isothiourea Relay Catalysis: Enantioselective Synthesis of α-Amino Acid Derivatives via Allylic Amination and [2,3]-Sigmatropic Rearrangement

Journal of the American Chemical Society, 2017
A tandem relay catalytic protocol using both Pd and isothiourea catalysis has been developed for the enantioselective synthesis of α-amino acid derivatives containing two stereogenic centers from readily accessible N,N-disubstituted glycine aryl esters ...
Stéphanie S. M. Spoehrle, Thomas H. West, James E. Taylor, A. Slawin, Andrew D. Smith   +4 more
semanticscholar   +1 more source

Photocatalytic Enantioselective Radical Cascade Multicomponent Minisci Reaction of β‐Carbolines Using Diazo Compounds as Radical Precursors

Advanced Science
Here, a photocatalytic asymmetric multicomponent cascade Minisci reaction of β‐carbolines with enamides and diazo compounds is reported, enabling an effective enantioselective radical C─H functionalization of β‐carbolines with high yields and ...
Yi‐Jie Gu, Mu‐Peng Luo, Hua Yuan, Guo‐Kai Liu, Shou‐Guo Wang   +4 more
doaj   +1 more source

Enantioselective Ni-Catalyzed Electrochemical Synthesis of Biaryl Atropisomers.

Journal of the American Chemical Society, 2020
A scalable enantioselective nickel-catalyzed electrochemical reductive homocoupling of aryl bromides has been developed, affording enantioenriched axially chiral biaryls in good yield under mild conditions using electricity as a reductant in an undivided
Hui Qiu, B. Shuai, Yunzhong Wang, Dong Liu, Yue-Gang Chen, Pei‐Sen Gao, Hong-Xing Ma, Song Chen, T. Mei   +8 more
semanticscholar   +1 more source

Nickel(II)/BINOL-catalyzed enantioselective C–H activation via desymmetrization and kinetic resolution

Nature Communications
The field of nickel catalysis has witnessed remarkable growth in recent years. However, the use of nickel catalysts in enantioselective C–H activation remains a daunting challenge because of their variable oxidation states, intricate coordination ...
Qi-Jun Yao, Fan-Rui Huang, Jia-Hao Chen, Bing-Feng Shi   +3 more
doaj   +1 more source

Enantioselective synthesis of aziridines using asymmetric transfer hydrogenation as a precursor for chiral derivatives used as bonding agent for rocket solid propellants

Química Nova, 2002
A rapid, expedient and enantioselective method for the synthesis of beta-hydroxy amines and monosubstituted aziridines in up to 99% e.e., via asymmetric transfer hydrogenation of a-amino ketones and cyclisation through treatment with tosyl chloride and ...
Aparecida M. Kawamoto, Martin Wills
doaj   +1 more source