ChemInform Abstract: Highly Chemo- and Diastereoselective Synthesis of Substituted Tetrahydropyran-4-ones via Organocatalytic oxa-Diels-Alder Reactions of Acyclic α,β-Unsaturated Ketones with Aldehydes.

ChemInform ◽  
2008 ◽  
Vol 39 (25) ◽  
Author(s):  
Liang-Qiu Lu ◽  
Xiao-Ning Xing ◽  
Xu-Fan Wang ◽  
Zhi-Hui Ming ◽  
Hong-Mei Wang ◽  
...  
Keyword(s):  
Diels Alder ◽  
Diastereoselective Synthesis ◽  
Unsaturated Ketones

scholarly journals Oxidative Asymmetric Formal Aza-Diels–Alder Reactions of Tetrahydro-β-carboline with Enones in the Synthesis of Indoloquinolizidine-2-ones

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2228 ◽  
Author(s):  
Xiang Wu ◽  
Shi-Bao Zhao ◽  
Lang-Lang Zheng ◽  
You-Gui Li
Keyword(s):  
Oxidative Dehydrogenation ◽  
Alder Reaction ◽  
Diels Alder ◽  
Diastereoselective Synthesis ◽  
Butyl Hydroperoxide ◽  
Unsaturated Ketones ◽  
Tert Butyl ◽  
Diels Alder Reaction ◽  
Tert Butyl Hydroperoxide ◽  
Reaction Proceeds

Ru-catalyzed tandem amine oxidative dehydrogenation/formal aza-Diels–Alder reaction for enantio- and diastereoselective synthesis of indoloquinolizidine-2-ones from tetrahydro-β-carbolines and α,β-unsaturated ketones is described. The reaction proceeds via tandem ruthenium-catalyzed amine dehydrogenation using tert-butyl hydroperoxide (TBHP) as the oxidant and a chiral thiourea-catalyzed formal aza-[4 + 2] cycloaddition, providing a step-economical strategy for the synthesis of these valuable heterocyclic products.

Uncatalyzed diastereoselective synthesis of alkyliminofurochromone-derived benzylmalononitriles via a three-component cascade reaction: competition between Diels–Alder cycloaddition and Michael addition

2021 ◽  
Author(s):  
Mohammad Bagher Teimouri ◽  
Zahra Mokhtare ◽  
Hamid Reza Khavasi
Keyword(s):  
Michael Addition ◽  
Heterocyclic Ring ◽  
Cascade Reaction ◽  
Diels Alder ◽  
Chemical Bonds ◽  
Diastereoselective Synthesis ◽  
Atom Economy ◽  
One Pot

Three new chemical bonds and three stereogenic centres and one heterocyclic ring were assembled stereoselectively in a convenient high atom-economy one-pot operation.

scholarly journals Nanocrystals perovskites photocatalyzed singlet oxygen generation for light-driven organic reactions

2021 ◽  
Author(s):  
Marco Corti ◽  
Rossella Chiara ◽  
Lidia Romani ◽  
Barbara Mannucci ◽  
Lorenzo Malavasi ◽  
...  
Keyword(s):  
Diels Alder ◽  
Organic Reactions ◽  
Hydroxy Ketone ◽  
Oxidation Reactions ◽  
Perovskite Nanocrystals ◽  
Oxygen Generation ◽  
Unsaturated Ketones ◽  
Halide Perovskite ◽  
Lead Halide

AbstractLead halide perovskite nanocrystals were prepared and used as photocatalysts for the in situ 1O2 generation to perform hetero Diels–Alder, ene and oxidation reactions with suitable dienes and alkenes. The methodology has been reasonably standardized and made applicable to a variety of olefinic substrates. The scope of the method is finely illustrated by the results in all the tested reactions, which allowed to obtain desymmetrized hydroxy-ketone derivatives, unsaturated ketones and epoxides. Some limitations were also observed especially in the case of the alkene oxidations as well as poor chemoselectivity was somewhere observed. Graphic abstract 1O2 generated by lead halide perovskite nanocrystals as photocatalyst in organic reactions.

scholarly journals Diastereoselective synthesis of novel spiro indanone fused pyrano[3,2-c]chromene derivatives following hetero-Diels–Alder reaction andin vitroanticancer studies

RSC Advances ◽  
2018 ◽  
Vol 8 (30) ◽  
pp. 16802-16814 ◽  
Author(s):  
Pravati Panda ◽  
Sabita Nayak ◽  
Susanta Ku. Sahoo ◽  
Seetaram Mohapatra ◽  
Deepika Nayak ◽  
...  
Keyword(s):  
Anticancer Activity ◽  
Alder Reaction ◽  
Diels Alder ◽  
Diastereoselective Synthesis ◽  
Diels Alder Reaction

Synthesis of novel spiro indanone fused pyrano[3,2-c]chromene derivatives following hetero-Diels–Alder reaction has been demonstrated and evaluated for theirin vitroanticancer activity.

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