Chiral Lewis Acid-Catalyzed Highly Enantioselective [4 + 3] Cycloaddition Reactions of Nitrogen-Stabilized Oxyallyl Cations Derived from Allenamides

2005 ◽  
Vol 127 (1) ◽  
pp. 50-51 ◽  
Author(s):  
Jian Huang ◽  
Richard P. Hsung
Keyword(s):  
Lewis Acid ◽  
Cycloaddition Reactions ◽  
Chiral Lewis Acid ◽  
Acid Catalyzed ◽  
Oxyallyl Cations

Enantioselective formal [2+2+2] cycloaddition of 1,3,5-triazinanes to construct tetrahydropyrimidin-4-one derivatives

2021 ◽  
Author(s):  
Peiran Ruan ◽  
Qiong Tang ◽  
Zun Yang ◽  
Xiaohua Liu ◽  
Xiaoming Feng
Keyword(s):  
Lewis Acid ◽  
Chiral Lewis Acid ◽  
Acid Catalyzed

A chiral Lewis acid-catalyzed enantioselective formal [2+2+2] cycloaddition of 1,3,5-triazinanes with azlactones or β,γ-unsaturated pyrazole amides were developed to synthesize chiral tertiary/quaternary tetrahydropyrimidin-4-one derivatives with good yields and enantioselectivities. Two...

Synthesis of bicyclic vinyl triazenes by Ficini-type reactions

2021 ◽  
Author(s):  
Carl Thomas Bormann ◽  
Farzaneh Fadaei-Tirani ◽  
Rosario Scopelliti ◽  
Kay Severin
Keyword(s):  
Lewis Acid ◽  
Cycloaddition Reactions ◽  
Acid Catalyzed

Cyclobutenyl triazenes are obtained by Lewis acid-catalyzed [2 + 2] cycloaddition reactions of 1-alkynyl triazenes and enones. The triazene group in the product enables rearrangements and functionalizations.

Asymmetric catalytic nitrooxylation and azidation of β-keto amides/esters with hypervalent iodine reagents

2022 ◽  
Author(s):  
Changqiang He ◽  
Zhikun Wu ◽  
Yuqiao Zhou ◽  
Weidi Cao ◽  
Xiaoming Feng
Keyword(s):  
Lewis Acid ◽  
Hypervalent Iodine ◽  
Asymmetric Catalytic ◽  
Chiral Lewis Acid ◽  
Acid Catalyzed

Chiral Lewis acid-catalyzed enantioselective nitrooxylation of cyclic and acyclic β-keto amides/esters with hypervalent iodine(III) reagents is reported. A number of α-nitrooxy-β-keto amides/esters were obtained with good yields and high enantioselectivities...

Asymmetric 1,3-Dipolar Cycloaddition Reactions of Benzonitrile Oxide Mediated by a Chiral Lewis Acid

2007 ◽  
Vol 2007 (17) ◽  
pp. 2859-2864 ◽  
Author(s):  
Hidetoshi Yamamoto ◽  
Saori Hayashi ◽  
Masashi Kubo ◽  
Mayu Harada ◽  
Masayuki Hasegawa ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Dipolar Cycloaddition ◽  
Cycloaddition Reactions ◽  
Chiral Lewis Acid

ChemInform Abstract: Chiral Lewis Acid-Catalyzed Enantioselective Cycloadditions Between Indoles and Cyclic Carbonyl Ylides Derived from Diazodiketone or Diazoketoester Derivatives.

ChemInform ◽  
2015 ◽  
Vol 46 (46) ◽  
pp. no-no
Author(s):  
Hiroyuki Suga ◽  
Yurie Sekikawa ◽  
Shunta Misawa ◽  
Daito Kinugawa ◽  
Rinnosuke Oda ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Chiral Lewis Acid ◽  
Acid Catalyzed
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