ChemInform Abstract: Copper-Catalyzed Tandem Process: An Efficient Approach to 2-Substituted-1,4-benzodioxanes.

ChemInform ◽  
2010 ◽  
Vol 41 (44) ◽  
pp. no-no
Author(s):  
Yunyun Liu ◽  
Weiliang Bao
Keyword(s):  
Efficient Approach ◽  
Tandem Process

A palladium-catalyzed tandem reaction of 2-(2-bromobenzylidene)cyclobutanone with 2-alkynylphenol

2015 ◽  
Vol 51 (92) ◽  
pp. 16483-16485 ◽  
Author(s):  
Xiaolin Pan ◽  
Yong Luo ◽  
Hong-Guang Xia ◽  
Jie Wu
Keyword(s):  
High Efficiency ◽  
Tandem Reaction ◽  
Efficient Approach ◽  
Palladium Catalyzed ◽  
Tandem Process ◽  
Excellent Selectivity

An efficient approach for the generation of benzo[b]naphtho[2,3-d]oxocin-6-ones through a palladium-catalyzed tandem reaction of 2-alkynylphenol with 2-(2-bromobenzylidene)cyclobutanone is described. This tandem process afforded the fused polycycles easily, with the formation of three bonds with high efficiency and excellent selectivity.

One-Pot Synthesis of Indolo[2,1-b]quinazoline-6,12-diones under Aerobic Conditions

2021 ◽  
Vol 6 (3) ◽  
pp. 154-160
Author(s):  
Bhima Sridevi
Keyword(s):  
Single Step ◽  
One Pot ◽  
Aerobic Conditions ◽  
Efficient Approach ◽  
One Pot Synthesis ◽  
Kornblum Oxidation ◽  
Tandem Process

An efficient approach for the formation of biologically important indolo[2,1-b]quinazoline-6,12-diones in good to moderate yields has been accomplished from 2-haloacetophenones and anthranilamides employing I2/DMSO/CuI under aerobic conditions. This tandem process is believed to proceed via iodination of 2-haloacetophenone followed by Kornblum oxidation and copper-catalyzed intramolecular N-arylation. This method adopts five reactions such as α-halogenation, oxidation, condensation, aromatization and heteroaryl coupling in a single step which makes it as an attractive and useful for the synthesis of indolo[2,1-b]quinazoline-6,12-diones.

Efficient approach for analysis of unsteady viscous flows in turbomachines

AIAA Journal ◽  
1998 ◽  
Vol 36 ◽  
pp. 2005-2012
Author(s):  
L. He ◽  
W. Ning
Keyword(s):  
Viscous Flows ◽  
Efficient Approach

One-Pot Synthesis and Conformational Analysis of 6-Membered Cyclic Iodonium Salts

2020 ◽  
Author(s):  
Lucien Caspers ◽  
Julian Spils ◽  
Mattis Damrath ◽  
Enno Lork ◽  
Boris Nachtsheim
Keyword(s):  
Conformational Analysis ◽  
Bronsted Acids ◽  
One Pot ◽  
Benzyl Alcohols ◽  
Iodonium Salts ◽  
Efficient Approach ◽  
One Pot Synthesis ◽  
Diaryliodonium Salts

In this article we describe an efficient approach for the synthesis of cyclic diaryliodonium salts. The method is based on benzyl alcohols as starting materials and consists of an Friedel-Crafts-arylation/oxidation sequence. Besides a deep optimization, particluar focusing on the choice and ratios of the utilized Bronsted-acids and oxidants, we explore the substrate scope of this transformation. We also discuss an interesting isomerism of cyclic iodonium salts substituted with aliphatic substituents at the bridge head carbon. <br>

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