Results 131 to 140 of about 83,038 (344)

Oxone in Microemulsion Process for Diastereoselective Epoxidation of R-Limonene to Trans-Limonene Dioxide, Using a Chiral Ketone Catalyst

, 2023
Yacoub Mahamat Ahmat, Serge Kaliaguine
openalex   +1 more source

Synthesis and exploration of electronically modified (R)-5,5-dimethyl-(p-CF_3)_3-i-PrPHOX in palladium-catalyzed enantio- and diastereoselective allylic alkylation: a practical alternative to (R)-(p-CF_3)_3-t-BuPHOX [PDF]

, 2015
The synthesis of the novel electronically modified phosphinooxazoline (PHOX) ligand, (R)-5,5-dimethyl-(p-CF_3)_3-i-PrPHOX, is described. The utility of this PHOX ligand is explored in both enantio- and diastereoselective palladium-catalyzed allylic ...
Craig, Robert A., II, Stoltz, Brian M.
core   +1 more source

Dual‐Mode Thio‐MacMillan Organocatalysts: Stereoselective Diels–Alder Reactions or Sacrificial Self‐Cyclization to N‐Bridged Bicyclic Lactams

Chemistry – A European Journal, EarlyView.
The study of the Diels–Alder reaction of cinnamaldehyde and cyclopentadiene, catalyzed by chiral imidazolidine‐4‐thiones, led to the discovery of a highly regio‐ and stereoselective Michael‐addition and consecutive ring closure. Here, the imidazolidine‐4‐thione not only catalytically activates cinnamaldehyde but also participates as the nucleophile to ...
Marian S. R. Ebeling, Luca V. Parziale, Marc Sachsenhauser, Christoph J. B. Seifert, Nathalie J. Kurrle, Oliver Trapp   +5 more
wiley   +1 more source

Controlling Enantioselectivity and Diastereoselectivity in Radical Cascade Cyclization for Construction of Bicyclic Structures

, 2021
Congzhe Zhang, Duo‐Sheng Wang, Wan‐Chen Cindy Lee, Alexander M. McKillop, X. Peter Zhang   +4 more
openalex   +2 more sources

Diastereoselective Hydrogenation in the Preparation of Fine Chemicals [PDF]

, 2018
Heterogeneous catalytic diastereoselective hydrogenation is reviewed with a special emphasis on its application in the preparation of fine ...
Kukula, Pavel, Prins, Roel
core  

Photoinduced, Chemoselective γ‐Alkylation of 2‐Silyloxyfurans with α‐Bromoketones: A Rapid Entry to Chiral ε‐Keto‐γ‐Butenolides

Chemistry – A European Journal, EarlyView.
A photoinduced, regio‐ and chemoselective γ‐alkylation of 2‐silyloxyfurans with a‐bromoketones was achieved by exploiting a photoredox catalytic process promoted by blue light. This approach provides practical and efficient access to chiral, ε‐ketobutenolides, in one step and high yields.
Debora Guazzetti, Luca Aimi, Enrico Marcantonio, Giovanni Maria Siciliano, Kelly Bugatti, Sara Dobani, Andrea Sartori, Lucia Battistini, Franca Zanardi, Claudio Curti   +9 more
wiley   +1 more source

Regio‐ and Diastereoselective C–C Silylation of Cyclopropyl Acetates Harnessing Fluorinated Poly(pyridyl)Borate Rhodium Catalysts

Chemistry – A European Journal, EarlyView.
Fluorinated poly(pyridyl)borates have been utilized to stabilize rhodium‐diene complexes and as supporting ligands in rhodium‐catalyzed redox‐neutral C–C silylation of cyclopropyl acetates, producing silicon‐containing heterocyclic products, dioxasilolanes.
Vo Quang Huy Phan, Suman Das Adhikary, Junha Jeon, H. V. Rasika Dias   +3 more
wiley   +1 more source

Review of: "Directed nickel-catalyzed regio- and diastereoselective arylamination of unactivated alkenes" [PDF]

, 2021
Zhuangzhi Shi
openalex   +1 more source

Synthesis of both enantiomers of ferrocene[1,2-c]1H-quinolin-2-one by diastereoselective deproto-zincation of sugar-derived ferrocene esters

, 2012
This research has also been performed as part of the Indo-French "Joint Laboratory for Sustainable Chemistry at Interfaces". The calculations were performed by using the RIKEN Integrated Cluster of Clusters (RICC) facility.International ...
Chevallier, Floris, Dayaker, Gandrath, Komagawa, Shinsuke, Mongin, Florence, Radha Krishna, Palakodety, Roisnel, Thierry, Sreeshailam, Aare, Takita, Ryo, Uchiyama, Masanobu, Venkata Ramana, D.   +9 more
core   +2 more sources

SmI2/Sm‐Induced Reductive Silacyclization of Alkene/Diene Derivatives Using Dichlorosilanes or 1,2‐Dichlorodisilanes via Reductive Radical‐Polar Crossover

Chemistry – A European Journal, EarlyView.
A SmI2/Sm‐mediated silacyclization unlocks a concise route to 4–7‐membered silacycles from simple unsaturated substrates and dichlorosilanes/disilanes. The complementary functions of samarium reductants trigger a reductive radical–polar crossover, offering a versatile strategy for constructing multiple Si─C bonds efficiently.
Zhengwei Chen, Daigo Kondo, Tsutomu Mizota, Leo Onishi, Huiying Mu, Koji Miki, Akiya Ogawa, Kouichi Ohe   +7 more
wiley   +1 more source