Results 1 to 10 of about 555,071 (331)

Catalytic enantioselective synthesis of quaternary carbon stereocentres [PDF]

open access: yesNature, 2014
Quaternary carbon stereocentres-carbon atoms to which four distinct carbon substituents are attached-are common features of molecules found in nature. However, before recent advances in chemical catalysis, there were few methods of constructing single ...
Larry E Overman
exaly   +4 more sources

Acyclic Quaternary Carbon Stereocenters via Enantioselective Transition Metal Catalysis

open access: yesChemical Reviews, 2017
Whereas numerous asymmetric methods for formation of quaternary carbon stereocenters in cyclic systems have been documented, the construction of acyclic quaternary carbon stereocenters with control of absolute stereochemistry remains a formidable ...
Michael J Krische
exaly   +2 more sources

Catalytic Enantioselective Construction of Quaternary Stereocenters: Assembly of Key Building Blocks for the Synthesis of Biologically Active Molecules

open access: yesAccounts of Chemical Research, 2015
The ever-present demand for drugs with better efficacy and fewer side effects continually motivates scientists to explore the vast chemical space. Traditionally, medicinal chemists have focused much attention on achiral or so-called "flat" molecules ...
Seo-jung Han, Wen-bo Liu, Brian M Stoltz
exaly   +2 more sources

Synthetic Strategies toward Natural Products Containing Contiguous Stereogenic Quaternary Carbon Atoms

open access: yesAngewandte Chemie - International Edition, 2016
Strategies for the total synthesis of complex natural products that contain two or more contiguous stereogenic quaternary carbon atoms in their intricate structures are reviewed with 12 representative examples.
Stephen Hanessian, Larry E Overman
exaly   +2 more sources

2020 Quaternary Young Investigator Award: Announcement and Interview with the Winner

open access: yesQuaternary, 2021
After an extensive voting period, we are proud to present the winner of the Quaternary Young Investigator Award: Dr [...]
Quaternary Editorial Office
doaj   +1 more source

Evaluation of the Role of Tectonic Structures in the Stratigraphy and Plio-Quaternary Eruptions of Sahand Volcano (East Azarbaijan Province) [PDF]

open access: yesمخاطرات محیط طبیعی, 2021
The study of tectonic structures of volcanic areas is very effective in controlling the hazards caused by their reactivation. In this study, while introducing the different types of Sahand volcanic products and how they are deposited in the areas around ...
Farhad Pirmohammadi Alishah   +1 more
doaj   +1 more source

Acknowledgment to Reviewers of Quaternary in 2021

open access: yesQuaternary, 2022
Rigorous peer-reviews are the basis of high-quality academic publishing [...]
Quaternary Editorial Office
doaj   +1 more source

Acknowledgment to the Reviewers of Quaternary in 2022

open access: yesQuaternary, 2023
High-quality academic publishing is built on rigorous peer review [...]
Quaternary Editorial Office
doaj   +1 more source

Quaternary Ammonium Compounds: A Chemical Class of Emerging Concern

open access: yesEnvironmental Science and Technology, 2023
Quaternary ammonium compounds (QACs), a large class of chemicals that includes high production volume substances, have been used for decades as antimicrobials, preservatives, and antistatic agents and for other functions in cleaning, disinfecting ...
W. Arnold   +25 more
semanticscholar   +1 more source

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