Results 31 to 40 of about 1,479,426 (321)

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

open access: yesiScience, 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   +3 more
doaj  

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

open access: yesiScience, 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   +7 more
doaj  

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

open access: yesiScience, 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   +4 more
doaj  

Functionalization of Pyrene To Prepare Luminescent Materials—Typical Examples of Synthetic Methodology [PDF]

open access: yes, 2016
Pyrene-based π-conjugated materials are considered to be an ideal organic electro-luminescence material for application in semiconductor devices, such as organic light-emitting diodes (OLEDs), organic field-effect transistors (OFETs) and organic ...
Ajami   +139 more
core   +1 more source

The The perceptions of Senior High School students and teachers about organic chemistry: A Ghanaian perspective

open access: yesScience Education International, 2021
The purpose of the study was to determine the perceptions that senior high school (SHS) chemistry students and teachers have about organic chemistry as well as to compare organic chemistry topics that are difficult for students and teachers.
Esther Nartey , Ruby Hanson
doaj   +1 more source

Barry Carpenter. Pioneering Physical Organic Chemist, Teacher, Mentor and Friend [PDF]

open access: yesarXiv, 2022
This is the preface to a special issue of the Journal of Physical Organic Chemistry dedicated to an outstanding physical organic chemist, mentor and friend, Barry Carpenter on the occasion of his official retirement.
arxiv  

Session Organic Chemistry

open access: yesCHIMIA, 2023
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Céline Wittwer
doaj  

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

open access: yesiScience, 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   +6 more
doaj  

Efficient simulations of gas-grain chemistry in interstellar clouds [PDF]

open access: yesPhys.Rev.Lett. 93 (2004) 170601, 2004
Chemical reactions on dust grains are of crucial importance in interstellar chemistry because they produce molecular hydrogen and various organic molecules. Due to the submicron size of the grains and the low flux, the surface populations of reactive species are small and strongly fluctuate.
arxiv   +1 more source

The chemistry of ultrasonic degradation of organic compounds [PDF]

open access: yes, 2011
The destruction of toxic organic molecules using advanced oxidation processes (AOPs) is a potent tool for pollution control and environmental protection.
Bremner, David H.   +2 more
core   +2 more sources

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