Organocatalytic Asymmetric Michael/Hemiketalization/Retro-aldol Reaction of α-Nitroketones with Unsaturated Pyrazolones: Synthesis of 3-Acyloxy Pyrazoles (original) (raw)

Enantioselective Synthesis of Functionalized Pyrazoles by NHC-Catalyzed Reaction of Pyrazolones with α,β-Unsaturated Aldehydes

Eringathodi Suresh

Organic letters, 2015

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Catalytic enantioselective synthesis of chiral 4-hydroxy 4′-substituted pyrazolones by the vinylogous aldol reaction of pyrazole-4,5-diones with 3-alkylidene-2-oxindoles

bhuvnesh singh

2021

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Synthesis of Spiro Pyrazolone-Oxindole and Bicyclic Pyrazolone Derivatives via Solvent-Dependent Regioselective Aza-1,4/1,6-Michael and Intramolecular Cycloaddition under Catalyst-Free Conditions

Dhurke Kashinath

SynOpen, 2021

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Regio-, Diastereo-, and Enantioselective Organocatalytic Addition of 4-Substituted Pyrazolones to Isatin-Derived Nitroalkenes

Gonzalo Blay Llinares

European Journal of Organic Chemistry, 2019

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Organocatalytic enantioselective pyrazol-3-one addition to maleimides: Reactivity and stereochemical course

Albert Moyano

Organic & biomolecular chemistry, 2012

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Organocatalytic enantioselective aminoalkylation of pyrazol-3-ones with aldimines generated in situ from α-amido sulfones

Gonzalo Blay Llinares

Organic & Biomolecular Chemistry, 2019

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Convenient Synthesis of Pyrazolo[4′,3′:5,6]pyrano[4,3-c][1,2]oxazoles via Intramolecular Nitrile Oxide Cycloaddition

Vaida Milišiūnaitė

Molecules

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Access to Some Angular Aminochromeno[2,3- c ]pyrazole Precursors by a Domino Knoevenagel-hetero-Diels-Alder Reaction

Narsidas Parmar

European Journal of Organic Chemistry, 2012

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New pyrazolone derivatives synthesis: comparison of the catalytic effect of three typically different Brønsted acid catalysts on the reaction progression

Gholamabbas Chehardoli

Iranian Chemical Communication, 2018

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Combining silver- and organocatalysis: an enantioselective sequential catalytic approach towards pyrano-annulated pyrazoles

Gerhard Raabe

Chem. Commun., 2015

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Enantioselective access to tetrahydropyrano[2,3- c ]pyrazoles via an organocatalytic domino Michael-hydroalkoxylation reaction

harshit joshi

Tetrahedron Letters, 2017

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Asymmetric Synthesis of Amino-Bis-Pyrazolone Derivatives via an Organocatalytic Mannich Reaction

Anssi Peuronen

The Journal of organic chemistry, 2017

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Pyrrolidine-Oxadiazolone Conjugates as Organocatalysts in Asymmetric Michael Reaction

Chandan Mahato

The Journal of Organic Chemistry, 2018

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Asymmetric Catalysis Using Modularly Designed Organocatalysts: Synthesis of Fused Tricyclic Pyrano‐Pyrano[2,3‐ c ]pyrrol Derivatives

John zhao

Advanced Synthesis & Catalysis, 2019

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Organocatalytic Asymmetric Michael/Acyl Transfer Reaction of α-Nitroketones with 2-Hydroxybenzylidene Ketones

Subhas Pan

European Journal of Organic Chemistry, 2019

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Rationally Designed Amide Donors for Organocatalytic Asymmetric Michael Reactions

Bin Tan

Angewandte Chemie International Edition, 2012

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One-pot, four-component synthesis of pyrano[2,3-c]pyrazoles catalyzed by sodium benzoate in aqueous medium

Heshmat Allah samimi

Current Chemistry Letters, 2013

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Synthesis and characterization of novel pyrazolone derivatives

Magda Marzouk

European Journal of Chemistry, 2014

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Simple and efficient protocol for the synthesis of novel dihydro-1H-pyrano[2,3-c]pyrazol-6-ones via a one-pot four-component reaction

sadeq azzam

Tetrahedron Letters, 2012

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Catalyst-Free One-Pot Access to Pyrazoles and Disulfide- Tethered Pyrazoles via Deamidative Heteroannulation of b- Ketodithioesters with Semicarbazide Hydrochloride in Water

Sumit K. Panja

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Four-Component Synthesis of pyrano[2,3-c]pyrazoles Catalyzed by Triphenylphosphine in Aqueous Medium

Raouf Boulcina

Letters in Organic Chemistry, 2016

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Efficient Synthesis of Pyrazoles: Oxidative CC/NN Bond-Formation Cascade

Gareth Cave

Angewandte Chemie International Edition, 2010

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Hydrotrope: green and rapid approach for the catalyst-free synthesis of pyrazole derivatives

Madhuri Barge

Monatshefte für Chemie - Chemical Monthly, 2013

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Cyclization of pyrazolones: novel synthesis of pyrano, pyrido, pyrimido and spiropyrazole derivatives

Wesam Shehab

Journal of The Iranian Chemical Society, 2018

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Highly Regioselective One-Pot, Three-Component Synthesis of 1-Aryl-3,4-Substituted/Annulated-5-(Cycloamino)/(Alkylamino)pyrazoles from β-Oxodithioesters

Ganesh Nandi, Maya Singh

European Journal of Organic Chemistry, 2012

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Catalyst-free, one-pot three-component approach for regioselectiv synthesis of several substituted pyrazolo[3,4-b]pyridin-6(7H)-ones

Hamzeh Kiyani

2014

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NbCl5-AgClO4 AS AN EFFECTIVE, SYNERGETIC CATALYTIC SYSTEM FOR THE SYNTHESIS OF FULLY SUBSTITUTED PYRAZOLES

Narendra Kamble

Rasayan Journal of Chemistry

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One-pot synthesis of pyrano[2,3-c]pyrazoles by using aqueous NaPTS as reusable catalyst at ambient condition

Editor CSRL

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Catalyst-Free One-Pot Access to Pyrazoles and Disulfide-Tethered Pyrazoles via Deamidative Heteroannulation of β-Ketodithioesters with Semicarbazide Hydrochloride in Water

sonam soni

Advanced Synthesis & Catalysis, 2018

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ChemInform Abstract: Lewis Acid and/or Lewis Base Catalyzed [3 + 2] Cycloaddition Reaction: Synthesis of Pyrazoles and Pyrazolines

Florence Mongin

ChemInform, 2009

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