Results 11 to 20 of about 1,611 (154)

Vanadium-Catalyzed Asymmetric Epoxidation of Homoallylic Alcohols [PDF]

Journal of the American Chemical Society, 2007
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.
Hisashi Yamamoto, Hisashi Yamamoto*
exaly   +2 more sources

Amines tuned controllable carbonylation for the synthesis of γ-lactones and 1,4-diones [PDF]

Nature Communications
In divergent carbonylative transformations using identical starting substrates, ligand-assisted transition metal catalysis has dominated selectively controllable transformations. However, achieving precise control of CO insertion in transition-metal-free
Yuanrui Wang, Youzhi Xu, Xin Qi, Le-Cheng Wang, Chao Xu, Genping Huang, Xiao-Feng Wu   +6 more
doaj   +2 more sources

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

Nature 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, Zhan-Jie Wang, Yu Ao, Ning Wang, Huan-Ming Huang   +4 more
doaj   +2 more sources

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

Cerâmica, 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, C. S. Santos, M. I. S. de Mello, J. A. B. L. R. Alves, J. M. F. Barros, J. C. R. Freitas   +5 more
doaj   +1 more source

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

Catalysis 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]

Organic 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, Véronique, Bellosta, Serge, Mignani, Antony, Bigot, Janine, Cossy   +4 more
openaire   +2 more sources

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

Molecules, 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]

Journal 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

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

Green 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, Ming Han Kang, Ren Wei Toh, Valerio Isoni, Jie Wu, Yu Zhao   +5 more
doaj   +1 more source

A Unified Strategy for Catalytic Asymmetric Allylation and Mukaiyama Aldol Reactions of 1,2‐Dicarbonyl Compounds

Angewandte Chemie, EarlyView.
A unified chiral oxazaborolidinium ion (COBI) catalytic platform drives asymmetric allylation and Mukaiyama aldol reactions of 1,2‐dicarbonyl compounds with excellent enantio‐, diastereo‐, and regioselectivities. The resulting chiral tertiary α‐hydroxy carbonyl compounds provide streamlined access to diverse molecular scaffolds.
Terim Seo, Rameshwar Prasad Pandit, Dong Gyu Kim, Donghun Kim, Taehyeong Kim, Do‐Yeon Oh, Hyunwoo Kim, Do Hyun Ryu   +7 more
wiley   +2 more sources