Results 41 to 50 of about 109,430 (294)

Recent advances in the total synthesis of monoterpenoid indole alkaloids enabled by asymmetric catalysis

Green Synthesis and Catalysis, 2022
Asymmetric catalysis has continued to enable the preparation of optically active natural products over the past decade. This minireview summarizes progress in the catalytic enantioselective total synthesis of complex monoterpenoid indole alkaloids ...
Xiao-Yu Liu, Yong Qin
doaj   +1 more source

New Trends in Asymmetric Catalysis [PDF]

Catalysts, 2021
As far back as the mid-nineteenth century, the studies of Louis Pasteur brought to light the essential role of molecular chirality in biology [...]
Schettini R., Sala G. D.
openaire   +2 more sources

Photochemical Approaches to Complex Chemotypes: Applications in Natural Product Synthesis. [PDF]

, 2016
The use of photochemical transformations is a powerful strategy that allows for the formation of a high degree of molecular complexity from relatively simple building blocks in a single step. A central feature of all light-promoted transformations is the
Kärkäs, Markus D., Porco, John A., Stephenson, Corey R.J.   +2 more
core   +2 more sources

Computational and Experimental Studies on the α-Functionalization of Ketones Using Domino Reactions: A Strategy to Increase Chemoselectivity at the α-Carbon of Ketones

Molecules
A facile strategy to increase the chemoselectivity of domino reactions was proposed and successfully applied in the α-functionalization of ketones.
Hui Sun, Li-Heng Yang, Meng-Yun Fu, Bin Cui   +3 more
doaj   +1 more source

Catalytic polymeric nanoreactors : more than a solid supported catalyst [PDF]

, 2012
Polymeric nanostructures can be synthesized where the catalytic motif is covalently attached within the core domain and protected from the environment by a polymeric shell.
Bosman, Liu, Wang, Yan
core   +2 more sources

Progress in Stereoselective Haloamination of Olefins

Molecules
The regio- and stereoselective adjacent bifunctionalization of olefins with amine and halogen groups can be effectively accomplished through catalytic haloamination methods.
Guo Zhong, Jiayu Zhou, Bin Cui, Hui Sun
doaj   +1 more source

Copper(I)-catalyzed asymmetric alkylation of α-imino-esters

Nature Communications, 2023
Asymmetric alkylation of enolates is one of the most direct and important reactions to prepare α-chiral carbonyl compounds. Except for the classical methods that rely on the use of chiral auxiliaries, asymmetric catalysis emerged as a powerful tool ...
Zong-Ci Liu, Zi-Qing Wang, Xuan Zhang, Liang Yin   +3 more
doaj   +1 more source

An Eight-Step Continuous-Flow Total Synthesis of Vitamin B1

Engineering
Vitamin B1 is widely applied in the healthcare and food industry as an antineuritic and antioxidant to maintain the normal functioning of nerve conduction, the heart, and the gastrointestinal tract.
Meifen Jiang, Minjie Liu, Weijian Li, Yingqi Xia, Fen-Er Chen   +4 more
doaj   +1 more source

Asymmetric Catalysis with Helical Polymers [PDF]

Chemistry – A European Journal, 2011
AbstractInspired by nature, the use of helical biopolymer catalysts has emerged over the last years as a new approach to asymmetric catalysis. In this Concept article the various approaches and designs and their application in asymmetric catalysis will be discussed.
Megens, Rik P., Roelfes, Gerard
openaire   +3 more sources

Organocatalytic synthesis of axially chiral atropisomers [PDF]

, 2017
This review summarises the recent progress made in the organocatalytic synthesis of atropisomeric compounds. Methodologies based on dynamic kinetic resolution and direct access to BINOL-like biaryls are described.
Renzi, P.
core   +1 more source