Organocatalytic one-pot asymmetric synthesis of 2-aryl-2,3-dihydro-4-quinolones

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 25375-25378 ◽  
Author(s):  
Gao-Fei Pan ◽  
Li Su ◽  
Yan-Lei Zhang ◽  
Shi-Huan Guo ◽  
Yong-Qiang Wang
Keyword(s):  
Asymmetric Synthesis ◽  
Enantioselective Synthesis ◽  
One Pot ◽  
Aryl Aldehydes ◽  
Highly Efficient

A highly efficient organocatalytic one-pot approach for enantioselective synthesis of (R)-2-aryl-2,3-dihydro-4-quinolones from o-aminoacetophenones and aryl aldehydes has been achieved.

A highly efficient asymmetric synthesis of quaternary stereocenter-containing indolizidine and quinolizidine alkaloids using aldehydes, nitroalkenes, and unactivated cyclic ketimines

2014 ◽  
Vol 50 (100) ◽  
pp. 15913-15915 ◽  
Author(s):  
Yu Tan ◽  
Yong-Jian Chen ◽  
Hua Lin ◽  
Han-Lin Luan ◽  
Xing-Wen Sun ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
Quinolizidine Alkaloids ◽  
One Pot ◽  
Efficient Approach ◽  
Highly Efficient ◽  
Quaternary Stereocenter

A highly efficient approach to the construction of indolizidines and quinolizidines bearing a bridged quaternary stereocenter has been established in a one-pot fashion using aldehydes, nitroalkenes, and cyclic ketimines.

SnCl4 or TiCl4: highly efficient catalysts for the detetrahydropyranylation and demethoxymethylation of phenolic ethers and sequential one-pot asymmetric synthesis of 3-aryl-2-hydroxy-2,3-dihydroindan-1-ones from chalcone epoxides

RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 63095-63103 ◽  
Author(s):  
Naseem Ahmed ◽  
Gulab Khushalrao Pathe ◽  
Sohan Jheeta
Keyword(s):  
Asymmetric Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
Highly Efficient

SnCl4 or TiCl4 catalysts provide a rapid and efficient detetrahydropyranylation and demethoxymethylation of phenolic ethers and a sequential one-pot intramolecular Friedel–Crafts alkylation of chalcone epoxides under mild reaction conditions.

One-pot, highly efficient, asymmetric synthesis of ring-fused piperidine derivatives bearing N,O- or N,N-acetal moieties

2016 ◽  
Vol 14 (8) ◽  
pp. 2444-2453 ◽  
Author(s):  
Ji-Yao Li ◽  
Zhi-Long Li ◽  
Wei-Wei Zhao ◽  
Yan-Kai Liu ◽  
Zhi-Ping Tong ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
Alder Reaction ◽  
Diels Alder ◽  
One Pot ◽  
Highly Efficient ◽  
Diels Alder Reaction

Lactols or cyclic hemiaminals are directly used as nucleophiles in the asymmetric aza-Diels–Alder reaction to synthesize ring-fused piperidine derivatives.

ChemInform Abstract: One-Pot, Highly Efficient, Asymmetric Synthesis of Ring-Fused Piperidine Derivatives Bearing N,O- or N,N-Acetal Moieties.

ChemInform ◽  
2016 ◽  
Vol 47 (26) ◽  
Author(s):  
Ji-Yao Li ◽  
Zhi-Long Li ◽  
Wei-Wei Zhao ◽  
Yan-Kai Liu ◽  
Zhi-Ping Tong ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
One Pot ◽  
Highly Efficient

Nickel Ferrite (NiFe2O4) Nanoparticles as Magnetically Recyclable Nanocatalyst for Highly Efficient Synthesis of 4H-Chromene Derivatives

2020 ◽  
Vol 20 (5) ◽  
pp. 3206-3216 ◽  
Author(s):  
Yaghoub Pourshojaei ◽  
Fatemeh Zolala ◽  
Khalil Eskandari ◽  
Mahshid Talebi ◽  
Laleh Morsali ◽  
...  
Keyword(s):  
Nickel Ferrite ◽  
Condensation Reaction ◽  
Ferrite Nanoparticles ◽  
Efficient Synthesis ◽  
One Pot ◽  
Aryl Aldehydes ◽  
Highly Efficient ◽  
Nano Catalyst ◽  
Nickel Ferrite Nanoparticles ◽  
Magnetically Recyclable Catalyst

An adapted one-pot route to nanocatalyst-assisted synthesis of 4H-chromenes via three component condensation reaction between dimedone, malononitrile, and a broad range of aryl aldehydes by the use of magnetic nickel ferrite nanoparticles is described. By this achievement, not only a novel route to highly efficient synthesis of these series of heterocycles was introduced but also the scope of these medicinally important products was developed via preparation of some novel products. Above all, a new application of nickel ferrite nanoparticles (NiFe2O4 NPs) as highly efficient, green and magnetically recyclable catalyst has been introduced. Overall, obtaining good to excellent yields of products, environmentally and economic benign procedure, easy handling, availability of starting materials, use of non-toxic solvents, and high recyclability of nano-catalyst could be countered as most important advantages of this methodology.

scholarly journals Enantioselective synthesis of naturally occurring isoquinoline alkaloids: (S)-(−)-trolline and (R)-(+)-oleracein E

2017 ◽  
Vol 4 (6) ◽  
pp. 958-966 ◽  
Author(s):  
Weilong Lin ◽  
Shengming Ma
Keyword(s):  
Asymmetric Synthesis ◽  
Enantioselective Synthesis ◽  
Isoquinoline Alkaloids ◽  
Highly Efficient ◽  
Naturally Occurring

The highly efficient asymmetric synthesis of a pair of enantiomers, (S)-(−)-trolline and (R)-(+)-oleracein E, has been achieved in five steps.

Recyclable organocatalyst-promoted one-pot Michael/aza-Henry/lactamization reactions for fluorinated 2-piperidinones bearing four stereogenic centres

RSC Advances ◽  
2015 ◽  
Vol 5 (87) ◽  
pp. 71071-71075 ◽  
Author(s):  
Xin Huang ◽  
Kenny Pham ◽  
Xiaofeng Zhang ◽  
Wen-Bin Yi ◽  
Jeremy H. Hyatt ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
Efficient Method ◽  
One Pot ◽  
Highly Efficient

A highly efficient method for asymmetric synthesis of fluorinated 2-piperidinones bearing four stereogenic centres is introduced.

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