Organocatalytic Asymmetric Addition of Aromatic α-Cyanoketones to o-Quinone Methides: Synthesis of 3,4-Dihydrocoumarins and Tetrasubstituted Chromans

2021 ◽  
Author(s):  
Chandan Gharui ◽  
Chandrakanta Parida ◽  
Subhas Chandra Pan
Keyword(s):  
Quinone Methides ◽  
Asymmetric Addition

ChemInform Abstract: Catalytic Asymmetric Addition of Meldrum′s Acid, Malononitrile, and 1,3-Dicarbonyls to ortho-Quinone Methides Generated in situ under Basic Conditions.

ChemInform ◽  
2015 ◽  
Vol 46 (35) ◽  
pp. no-no
Author(s):  
Lorenzo Caruana ◽  
Martina Mondatori ◽  
Vasco Corti ◽  
Sara Morales ◽  
Andrea Mazzanti ◽  
...  
Keyword(s):  
Quinone Methides ◽  
Asymmetric Addition ◽  
Catalytic Asymmetric

Chiral phosphoric acid catalyzed asymmetric addition of naphthols to para-quinone methides

2016 ◽  
Vol 14 (24) ◽  
pp. 5751-5754 ◽  
Author(s):  
Yuk Fai Wong ◽  
Zhaobin Wang ◽  
Jianwei Sun
Keyword(s):  
Phosphoric Acid ◽  
Quinone Methides ◽  
Asymmetric Addition ◽  
Chiral Phosphoric Acid ◽  
Acid Catalyzed

An asymmetric addition of naphthols to in situ generated para-quinone methides catalyzed by a chiral phosphoric acid is described.

scholarly journals Quaternary β2,2-amino acid derivatives by asymmetric addition of isoxazolidin-5-ones to para-quinone methides

2020 ◽  
Vol 56 (4) ◽  
pp. 579-582 ◽  
Author(s):  
Andreas Eitzinger ◽  
Michael Winter ◽  
Johannes Schörgenhumer ◽  
Mario Waser
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Amino Acid Derivatives ◽  
Quinone Methides ◽  
Chiral Phase ◽  
Asymmetric Addition

Novel densely functionalized β2,2-amino acids were obtained in almost enantiopure form using down to 20 ppm of a chiral phase-transfer catalyst.

Catalytic Asymmetric Addition of Meldrum’s Acid, Malononitrile, and 1,3-Dicarbonyls toortho-Quinone Methides Generated In Situ Under Basic Conditions

2015 ◽  
Vol 21 (16) ◽  
pp. 6037-6041 ◽  
Author(s):  
Lorenzo Caruana ◽  
Martina Mondatori ◽  
Vasco Corti ◽  
Sara Morales ◽  
Andrea Mazzanti ◽  
...  
Keyword(s):  
Meldrum's Acid ◽  
Quinone Methides ◽  
Meldrum’S Acid ◽  
Asymmetric Addition ◽  
Catalytic Asymmetric

Organocatalytic asymmetric addition of thioglycolates to o-quinone methides: a route to 5-substituted-5H-benzoxathiepine-2(3H)-ones

2020 ◽  
Vol 18 (15) ◽  
pp. 2828-2833
Author(s):  
Chandan Gharui ◽  
Satya Prakash ◽  
Deepak Chopra ◽  
Subhas Chandra Pan
Keyword(s):  
Enantioselective Synthesis ◽  
Quinone Methides ◽  
Asymmetric Addition

The first enantioselective synthesis of 5-substituted-5H-benzoxathiepine-2(3H)-ones via organocatalytic asymmetric addition of thioglycolates to o-quinone methides followed by cyclization.

Rh(III)-Catalyzed Redox-Neutral Cascade Annulation of Benzamides with p -Quinone Methides

2020 ◽  
Vol 2020 (29) ◽  
pp. 4494-4498
Author(s):  
Vinaykumar Kanchupalli ◽  
Rahul K. Shukla ◽  
Anurag Singh ◽  
Chandra M. R. Volla
Keyword(s):  
Quinone Methides
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