Results 11 to 20 of about 1,588,412 (342)

Catalytic Enantiodivergent Michael Addition by Subtle Adjustment of Achiral Amino Moiety of Dipeptide Phosphines

iScience, 2020
Summary: Over the past decades, asymmetric catalysis has been intensely investigated as a powerful tool for the preparation of numerous chiral biologically active compounds.
Huamin Wang, Xiuzheng Li, Youshao Tu, Junliang Zhang   +3 more
doaj   +1 more source

Titan's Organic Chemistry [PDF]

Symposium - International Astronomical Union, 1985
Voyager discovered nine simple organic molecules in the atmosphere of Titan. Complex organic solids, called tholins, produced by irradiation of simulated Titanian atmosphere are consistent with measured properties of Titan from ultraviolet to microwave frequencies, and are the likely main constituents of the observed red aerosols.
C. Sagan, W. R. Thompson, B. N. Khare
openaire   +1 more source

Selective Quadruple C(sp3)-F Functionalization of Polyfluoroalkyl Ketones

iScience, 2020
Summary: The significance of organofluorine compounds has inspired the establishment of numerous methods for the functionalization of rather inert C-F bonds.
Ting Xie, Guo-Qiang Wang, Ya-Wen Wang, Weidong Rao, Haiyan Xu, Shuhua Li, Zhi-Liang Shen, Xue-Qiang Chu   +7 more
doaj   +1 more source

Further developments of β,γ-unsaturated α-ketoesters as versatile synthons in asymmetric catalysis

iScience, 2022
Summary: β,γ-Unsaturated α-ketoesters prove to be versatile organic synthons participating in diverse catalytic asymmetric transformations with the breathtaking development of organo-catalysis, new catalytic systems including ingenious chiral ligands as ...
Ruixian Deng, Tian-Jiao Han, Xiang Gao, Yuan-Fu Yang, Guang-Jian Mei   +4 more
doaj   +1 more source

Three-center-four-electron halogen bond enables non-metallic complex catalysis for Mukaiyama-Mannich-type reaction

iScience, 2022
Summary: The three-center-four-electron halogen bond (3c4e X-bond) presents a fundamental design concept for catalysis. By integrating halogen(I) (X+: I+ or Br+), the bis-pyridyl ligand NN, and a non-nucleophilic counteranion Y, we developed non-metallic
Shunya Oishi, Takeshi Fujinami, Yu Masui, Toshiyasu Suzuki, Masayuki Kato, Naoya Ohtsuka, Norie Momiyama   +6 more
doaj   +1 more source

Turing patterns by supramolecular self-assembly of a single salphen building block

iScience, 2022
Summary: In the 1950s, Alan Turing showed that concerted reactions and diffusion of activating and inhibiting chemical species can autonomously generate patterns without previous positional information, thus providing a chemical basis for morphogenesis ...
Martha V. Escárcega-Bobadilla, Mauricio Maldonado-Domínguez, Margarita Romero-Ávila, Gustavo A. Zelada-Guillén   +3 more
doaj   +1 more source

Generation of Sulfonylated Tetrazoles through an Iron-Catalyzed Multicomponent Reaction Involving Sulfur Dioxide

iScience, 2020
Summary: As a privileged motif, tetrazoles can be widely found in pharmaceuticals and materials science. Herein, a five-component reaction of cycloketone oxime esters, alkynes, DABCO·(SO2)2, and two molecules of trimethylsilyl azide under iron catalysis ...
Jun Zhang, Xuefeng Wang, Yunyan Kuang, Jie Wu   +3 more
doaj   +1 more source

Organic Chemistry

Soil Science, 1945
Bibliogr. ; Mode of access: Internet.
Fieser, Louis F. (Louis Frederick), 1899-1977., Fieser, Mary, 1909-1997.   +1 more
openaire   +1 more source

New reactive intermediates in organic chemistry [PDF]

, 2013
No abstract ...
Bucher, Götz
core   +2 more sources

Analysis of Students’ Missed Organic Chemistry Quiz Questions that Stress the Importance of Prior General Chemistry Knowledge

Education Sciences, 2018
A concern about students’ conceptual difficulties in organic chemistry prompted this study. It was found that prior knowledge from general chemistry was critical in organic chemistry, but what were some of the concepts that comprised that prior ...
Julie Ealy
doaj   +1 more source