Results 11 to 20 of about 1,571 (154)

Photoredox/Cr-catalyzed enantioselective radical-polar crossover transformation via C-H functionalization [PDF]

open access: yesNature Communications
Asymmetric multicomponent reactions that aim to control multiple chiral centers with high selectivity in a single step remain an on-gonging challenge.
Si-Yuan Tang   +4 more
doaj   +2 more sources

Application of beta zeolite in allylation reaction aiming formation of new C-C bonds [PDF]

open access: yesCerâmica, 2020
This study describes the formation of new C-C bonds through the allylation reaction of different aldehydes promoted by beta zeolite. This environmentally friendly method was characterized by its efficiency, versatility, and chemoselectivity in the ...
V. K. S. A. Macedo   +5 more
doaj   +1 more source

A chiral oxazoline for catalytic enantioselective Nozaki-Hiyama-Kishi allylation and vinylation of aldehydes

open access: yesCatalysis Communications, 2021
Asymmetric allylation and vinylation of aldehydes with allyl halides and vinyl halides have been achieved using the chromium(II)-oxazoline catalyst.
Sharad V. Kumbhar, Chinpiao Chen
doaj   +1 more source

Rearrangement of Homoallylic Alcohols Induced by DAST [PDF]

open access: yesOrganic Letters, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Sophie, Canova   +4 more
openaire   +2 more sources

An Investigation of the Reactions of Substituted Homoallylic Alcohols with Various Oxidation Reagents

open access: yesMolecules, 2002
Substituted homoallylic alcohols have been synthesised both by [2,3]-Wittig rearrangement of unsymmetrical bis-allylic ethers and reaction of alkenyl chloromethyl oxiranes with Mg/THF.
A. Acar, S. Servi
doaj   +1 more source

Vanadium-Catalyzed Asymmetric Epoxidation of Homoallylic Alcohols [PDF]

open access: yesJournal of the American Chemical Society, 2006
New chiral bishydroxamic acids were synthesized and tested as chiral ligands in the vanadium-catalyzed asymmetric epoxidation of homoallylic alcohols to provide good yields and high enantioselectivities.
Wei, Zhang, Hisashi, Yamamoto
openaire   +2 more sources

Preparation of Homoallylic Homopropargylic Alcohols from 2‐Vinyloxiranes. [PDF]

open access: yesChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Matthew L, Maddess, Mark, Lautens
openaire   +2 more sources

Advances in the Different Synthetic Routes of Fluorinated Hydrazines. [PDF]

open access: yesChem Rec
This review highlights the various routes to the preparation of fluorinated hydrazines, thereby promoting the exploration of innovative methods for the synthesis of new N‐fluorinated hydrazines. Their synthesis mainly involves synthetic routes such as organometallic, organocatalytic, and photocatalytic.
Kyrko D, Crousse B.
europepmc   +2 more sources

A green access to supported cinchona alkaloid amide catalysts for heterogeneous enantioselective allylsilylation of aldehydes and process intensity evaluation in batch and flow

open access: yesGreen Synthesis and Catalysis, 2022
We report herein a new class of polystyrene-supported cinchona alkaloid amide catalysts for enantioselective allylation of various aldehydes using allyltrichlorosilane under both batch and continuous flow conditions.
Xiao Qian Ng   +5 more
doaj   +1 more source

Borylcyclopropanes: Synthetic Strategies and Applications

open access: yesAngewandte Chemie, EarlyView.
Borylcyclopropanes (cyclopropanes bearing a boron substituent) sit at the intersection of two privileged frameworks in synthesis. This review provides the first exhaustive survey of their chemistry, spanning metal–carbene, nucleophilic cyclization, radical, hydroboration, and C─H activation routes, and documenting applications in medicinal chemistry ...
Aiza A. Butt, Joseph M. Ready
wiley   +2 more sources

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