B(C6F5)3-catalyzed three-component tandem reaction to construct novel polycyclic quinone derivatives: synthesis of a carbonate salts chromogenic chemosensor

2021 ◽  
Author(s):  
Bei Wang ◽  
Hong Xu ◽  
Hua Zhang ◽  
Guo Min Zhang ◽  
Fu-Yu Li ◽  
...  
Keyword(s):  
Functional Group ◽  
Tandem Reaction ◽  
Carbonate Salts ◽  
Three Components

We have realized B(C6F5)3-catalyzed three-components tandem reaction of naphthoquinone, indole and maleimide, which has broad adaptability of substrate and good compatibility of functional group, and synthesized 33 examples. After photophysical...

2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-Mediated Tandem Oxidative-Coupling/Annulation of o-Hydroxyaryl Enaminones with Cycloheptatriene

Synthesis ◽  
2020 ◽  
Author(s):  
Dongping Cheng ◽  
Xiaoliang Xu ◽  
Yueqi Pu ◽  
Mingliang Wang ◽  
Yinqiang Shen ◽  
...  
Keyword(s):  
Convenient Method ◽  
Oxidative Coupling ◽  
Functional Group ◽  
Tandem Reaction

AbstractA DDQ-mediated tandem reaction of easily available o-hydroxy­aryl enaminones and cycloheptatriene is disclosed. It provides an effective and convenient method for the synthesis of 3-(cycloheptatrienyl)-substituted chromones in moderate to excellent yields with good functional group tolerance; this reaction involves an oxidative coupling and intramolecular annulation pathway.

Synthesis of Novel 1-Alkyl-1,2-dihydro-2-Imino-4-quinazolinamines by Tandem Reaction of the Three Components

Heterocycles ◽  
2013 ◽  
Vol 87 (7) ◽  
pp. 1493 ◽  
Author(s):  
Qing Rong Qi ◽  
Zhen Guo ◽  
Ping Yin ◽  
Ling He
Keyword(s):  
Tandem Reaction ◽  
Three Components

Fast construction of dianthraceno[a,e]pentalenes for OPV applications

2017 ◽  
Vol 4 (5) ◽  
pp. 711-716 ◽  
Author(s):  
Zhongbo Zhang ◽  
Haijun Fan ◽  
Xiaozhang Zhu
Keyword(s):  
Functional Group ◽  
New Method ◽  
Tandem Reaction ◽  
Palladium Catalyzed

A new method based on a palladium-catalyzed tandem reaction for the fast construction of a dianthraceno[a,e]pentalene (DAP) framework is developed, which gave a series of dianthraceno[a,e]pentalenes with good functional group tolerance, and it should be highlighted that five C–C bonds were formed in one reaction.

Practical Synthesis of Functionalized Chromeno[3,4-c]pyridine Derivatives via a CuCl2-Catalyzed Tandem Reaction of the Blaise Reaction Intermediates and 3-Cyanocoumarins

Synlett ◽  
2018 ◽  
Vol 29 (07) ◽  
pp. 959-963
Author(s):  
Jian-Jun Li ◽  
Zhiwei Chen ◽  
Yangyang Fan ◽  
Lei Zheng ◽  
Zhaohai Yang
Keyword(s):  
Michael Addition ◽  
Functional Group ◽  
Tandem Reaction ◽  
Pyridine Derivatives ◽  
Reaction Intermediates ◽  
Reaction Conditions ◽  
Purification Technique ◽  
Aromatization Reaction ◽  
Oxidative Aromatization ◽  
Practical Synthesis

This work discloses a novel and efficient protocol for the construction of functionalized chromeno[3,4-c]pyridine derivatives from the Blaise reaction intermediates and 3-cyanocoumarins through a CuCl2-catalyzed sequential Michael addition/intramolecular cyclization/oxidative aromatization reaction. This new method shows the advantages of mild reaction conditions, easy workup, nonchromatographic purification technique, good functional group tolerance, and moderate to good yields.

CH3CO2H-prompted three components tandem reaction: An efficient and practical approach to trisubstituted pyrrolo[1,2-a]pyrazines

Tetrahedron ◽  
2017 ◽  
Vol 73 (51) ◽  
pp. 7185-7189 ◽  
Author(s):  
Xianglong Chu ◽  
Zeyuan Zhang ◽  
Congcong Wang ◽  
Xuan Chen ◽  
Bin Wang ◽  
...  
Keyword(s):  
Practical Approach ◽  
Tandem Reaction ◽  
Three Components

ChemInform Abstract: Synthesis of Novel 1-Alkyl-1,2-dihydro-2-imino-4-quinazolinamines by Tandem Reaction of the Three Components.

ChemInform ◽  
2013 ◽  
Vol 44 (44) ◽  
pp. no-no
Author(s):  
Zhen Guo ◽  
Ping Yin ◽  
Ling He ◽  
Qing Rong Qi
Keyword(s):  
Tandem Reaction ◽  
Three Components

The Jovian ring

1984 ◽  
Vol 75 ◽  
pp. 203-209
Author(s):  
Joseph A. Burns
Keyword(s):  
Equatorial Plane ◽  
Charged Particles ◽  
Dynamical Evolution ◽  
Main Band ◽  
Small Grains ◽  
Three Components

ABSTRACTLying in Jupiter's equatorial plane is a diaphanous ring having little substructure within its three components (main band, faint disk, and halo). Micron-sized grains account for much of the visible ring, but particles of centimeter sizes and larger must also be present to absorb charged particles. Since dynamical evolution times and survival life times are quite short (≲102-3yr) for small grains, the Jovian ring is being continually replenished; probably most of the visible ring is generated by micrometeoroids colliding into unseen parent bodies that reside in the main band.

Catalytic enantioselective synthesis of indolizino[8,7-b]indole alkaloid derivatives based on the tandem reaction of tertiary enamides

2021 ◽  
Author(s):  
Xin-Ming Xu ◽  
Ming Xie ◽  
Jiazhu Li ◽  
Mei-Xiang Wang
Keyword(s):  
Indole Alkaloid ◽  
Enantioselective Synthesis ◽  
High Yield ◽  
Tandem Reaction ◽  
Indole Derivatives

An exquisite Pybox/Cu(OTf)2-catalyzed asymmetric tandem reaction of tertiary enamides was developed, which enabled the expeditious synthesis of indolizino[8,7-b]indole derivatives in high yield, excellent enantioselectivity and diastereoselectivity.

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