Dinuclear Zinc-Catalyzed Enantioselective Formal [3+2] Cycloaddition of N-2,2,2-Trifluoroethylisatin Ketimines with Low Reactive Aurone Derivatives

2021 ◽  
Author(s):  
Rui-Li Wang ◽  
Shi-Kun Jia ◽  
Ya-Jun Guo ◽  
Yang Yi ◽  
Yuan-Zhao Hua ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Brønsted Base ◽  
Derivatives Of

Highly enantioselective formal [3+2] cycloaddition of N-2,2,2-trifluoroethylisatin ketimines with aurone derivatives of low reactivity by chiral dinuclear zinc catalysts has been developed via a Brønsted base and Lewis acid cooperative...

Direct Mannich-Type Reactions Promoted by Frustrated Lewis Acid/Brønsted Base Catalysts

2016 ◽  
Vol 55 (44) ◽  
pp. 13877-13881 ◽  
Author(s):  
Jessica Z. Chan ◽  
Wenzhi Yao ◽  
Brian T. Hastings ◽  
Charles K. Lok ◽  
Masayuki Wasa
Keyword(s):  
Lewis Acid ◽  
Base Catalysts ◽  
Brønsted Base

Dinuclear zinc-catalyzed asymmetric [3+2] cyclization reaction for direct assembly of chiral α-amino-γ-butyrolactones bearing three stereocenters

2021 ◽  
Author(s):  
Wen-Peng Yang ◽  
Shi-Kun Jia ◽  
Tian-Tian Liu ◽  
Yuan-Zhao Hua ◽  
Mincan Wang
Keyword(s):  
Lewis Acid ◽  
Cyclization Reaction ◽  
Activation Model ◽  
Direct Assembly ◽  
Brønsted Base ◽  
Cooperative Activation

An efficient enantioselective [3+2] cyclization reaction of α-hydroxy-1-indanones and alkylidene azlactones has been developed with chiral dinuclear zinc catalysts via a Brønsted base and Lewis acid cooperative activation model. This...

Synthese von Derivaten des 1-Adamantylbenzols /Synthesis of Derivatives of 1-Adamantylbenzene

1979 ◽  
Vol 34 (9) ◽  
pp. 1286-1288 ◽  
Author(s):  
Jörn-Volker WeiB ◽  
Victor Wray ◽  
Reinhard Schmutzler
Keyword(s):  
Nmr Spectroscopy ◽  
Lewis Acid ◽  
Type Reaction ◽  
Benzene Toluene ◽  
Derivatives Of ◽  
C Nmr

Abstractp-Di(1-adamantyl)benzene (6a), a mixture of the m- and p-isomers of 1-adamantyl-toluene (6b), and p-(l-adamantyl)bromobenzene (6c) were obtained in a Friedel-Crafts type reaction from 1-adamantyl fluoride and benzene, toluene, bromobenzene, respectively, in the presence of the Lewis acid phenyltetrafluorophosphorane. Characterisation of the products -all previously described in the literature -was by analysis and 13C NMR spectroscopy.

Highly effective Brønsted base/lewis acid cooperative catalysis: a new Cd metal–organic framework for the synthesis of Hantzsch 1,4-DHPs at ambient temperature

2017 ◽  
Vol 41 (24) ◽  
pp. 15475-15484 ◽  
Author(s):  
Farzaneh Rouhani ◽  
Ali Morsali
Keyword(s):  
Ambient Temperature ◽  
Lewis Acid ◽  
Functional Group ◽  
Metal Organic Framework ◽  
Cooperative Catalysis ◽  
Highly Effective ◽  
Metal Organic ◽  
Brønsted Base ◽  
Organic Framework

A new 3D metal–organic framework {[Cd3(BDC)3(OPP)(DMF)2]·2DMA}n (TMU-33) has been synthesized. The performance of the imine functional group of the OPP ligand as a Brønsted base and open Cd site as a Lewis acid in this framework was investigated as cooperative catalyst.

Cyanation ofN-Acylhydrazones with Trimethylsilyl Cyanide Promoted by a Brønsted Base and a Lewis Acid

2005 ◽  
Vol 347 (15) ◽  
pp. 1899-1903 ◽  
Author(s):  
Hideyuki Konishi ◽  
Chikako Ogawa ◽  
Masaharu Sugiura ◽  
Shū Kobayashi
Keyword(s):  
Lewis Acid ◽  
Trimethylsilyl Cyanide ◽  
Brønsted Base

scholarly journals Tandem catalysis with a bifunctional site-isolated Lewis acid–Brønsted base metal–organic framework, NH2-MIL-101(Al)

2012 ◽  
Vol 48 (95) ◽  
pp. 11650 ◽  
Author(s):  
Renganathan Srirambalaji ◽  
Soonsang Hong ◽  
Ramalingam Natarajan ◽  
Minyoung Yoon ◽  
Raghunandan Hota ◽  
...  
Keyword(s):  
Base Metal ◽  
Lewis Acid ◽  
Metal Organic Framework ◽  
Tandem Catalysis ◽  
Metal Organic ◽  
Brønsted Base ◽  
Organic Framework

Direct Mannich-Type Reactions Promoted by Frustrated Lewis Acid/Brønsted Base Catalysts

2016 ◽  
Vol 128 (44) ◽  
pp. 14081-14085 ◽  
Author(s):  
Jessica Z. Chan ◽  
Wenzhi Yao ◽  
Brian T. Hastings ◽  
Charles K. Lok ◽  
Masayuki Wasa
Keyword(s):  
Lewis Acid ◽  
Base Catalysts ◽  
Brønsted Base
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