A New Lewis Acid System Palladium/TMSCl for Catalytic Aldol Condensation of Aldehydes with Ketones.

ChemInform ◽  
2004 ◽  
Vol 35 (45) ◽  
Author(s):  
Yulin Zhu ◽  
Yuanjiang Pan
Keyword(s):  
Lewis Acid ◽  
Aldol Condensation ◽  
Acid System

ChemInform Abstract: Investigation of Meyer-Schuster Rearrangement Promoted by a Samarium(III) Triflate/N-Fluorobenzenesulfonimide Lewis Acid System.

ChemInform ◽  
2016 ◽  
Vol 47 (43) ◽  
Author(s):  
Chuan Du ◽  
Xiaoyu Wang ◽  
Shengfei Jin ◽  
Hui Shi ◽  
Yangming Li ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Acid System

Asymmetric synthesis of cyclopentanones through dual Lewis acid-catalysed [3+2]-cycloaddition of donor–acceptor cyclopropanes with ketenes

2019 ◽  
Vol 55 (90) ◽  
pp. 13558-13561 ◽  
Author(s):  
Mukulesh Mondal ◽  
Manashi Panda ◽  
Nicholas W. Davis ◽  
Vickie McKee ◽  
Nessan J. Kerrigan
Keyword(s):  
Asymmetric Synthesis ◽  
Lewis Acid ◽  
Acid System ◽  
Donor Acceptor

A dual Lewis acid system promotes the formal [3+2]-cycloaddition of enantioenriched donor–acceptor cyclopropanes with ketenes to afford cyclopentanones.

Direct Synthesis of 6H-Chromeno[3,4-b]quinolin-6-ol Derivatives from Substituted 3-Nitro-2H-chromenes and 2-Nitrobenzaldehydes Mediated by Fe/AcOH System

Synthesis ◽  
2017 ◽  
Vol 50 (06) ◽  
pp. 1350-1358 ◽  
Author(s):  
Cunde Wang ◽  
Xushun Qing ◽  
Ting Wang ◽  
Chenlu Dai ◽  
Zhenjie Su
Keyword(s):  
Acetic Acid ◽  
Nucleophilic Addition ◽  
Aldol Condensation ◽  
Direct Synthesis ◽  
Reductive Cyclization ◽  
Quinoline Derivatives ◽  
Acid System ◽  
X Ray ◽  
X Ray Crystallography ◽  
Sequential Reduction

An efficient iron/acetic acid system-mediated reductive cyclization reaction of substituted 2-aryl-3-nitro-2H-chromenes with substituted 2-nitrobenzaldehydes for the synthesis of 6-aryl-6H-chromeno[3,4-b]quinolines was developed. This reaction involves the sequential reduction, hydrolysis, aldol condensation, intramolecular addition, and the nucleophilic addition of substituted 2-aryl-3-nitro-2H-chromenes with substituted 2-nitrobenzaldehydes to give the corresponding 6H-chromeno[3,4-b]quinolines. This transformation provides a straightforward synthetic protocol for constructing substituted 6H-chromeno[3,4-b]quinoline derivatives. The structures of three typical products were confirmed by X-ray crystallography.

Cross-Coupling Reaction between Alcohols through sp3CH Activation Catalyzed by a Ruthenium/Lewis Acid System

2008 ◽  
Vol 14 (33) ◽  
pp. 10201-10205 ◽  
Author(s):  
Shu-Yu Zhang ◽  
Yong-Qiang Tu ◽  
Chun-An Fan ◽  
Yi-Jun Jiang ◽  
Lei Shi ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Acid System ◽  
Cross Coupling Reaction
Sign in / Sign up

Export Citation Format

Share Document