Catalyst-Free One-Pot Synthesis of Novel Heteroarylamine Substituted Furo[3,2-c]coumarins

Synlett ◽  
2018 ◽  
Vol 29 (12) ◽  
pp. 1589-1592 ◽  
Author(s):  
Abolfazl Olyaei ◽  
Mahnaz Saraei ◽  
Reyhaneh Khoeiniha
Keyword(s):  
Michael Addition ◽  
Aldol Condensation ◽  
Ring Closure ◽  
Dehydration Reaction ◽  
One Pot ◽  
Catalyst Free ◽  
One Pot Synthesis ◽  
Tandem Process ◽  
First Time

A high-yielding cyclocondensation of 4-hydroxycoumarin, phenylglyoxal monohydrate, and heteroarylamines proceeds without catalysis, which gives novel functionalized furo[3,2-c]coumarins and heteroarylamino alkylation of coumarin products in acetonitrile under reflux, is reported for the first time. This tandem process involves sequentially an aldol condensation, Michael addition, a ring closure, and dehydration reaction.

One pot synthesis of pyrrolo[3,2,1-de]phenanthridines from 7-phenylindoles via tandem C–H olefination/aza-Michael addition

2020 ◽  
Vol 7 (1) ◽  
pp. 53-63 ◽  
Author(s):  
Yumeng Yuan ◽  
Guoshuai Pan ◽  
Xiaofeng Zhang ◽  
Qiufeng Huang
Keyword(s):  
Catalytic System ◽  
Michael Addition ◽  
One Pot ◽  
One Pot Synthesis ◽  
System P ◽  
Tandem Process

An unprecedented one-pot C–H olefination/aza-Michael addition tandem process has been developed for the synthesis of pyrrolo[3,2,1-de]phenanthridines from 7-phenylindoles and alkenes using a [Cp*RhCl2]2/AgOAc/Me4NOAc catalytic system.

Catalyst-Free One-Pot Synthesis of Chromeno-Imidazo-Pyridinones by an Aza-Michael Addition/Rearrangement/Heterocyclization Tandem Reaction

Synlett ◽  
2018 ◽  
Vol 29 (11) ◽  
pp. 1437-1440 ◽  
Author(s):  
Oualid Talhi ◽  
Norah Bennamane ◽  
Artur Silva ◽  
Houria Lakhdari ◽  
Ridha Hassaine ◽  
...  
Keyword(s):  
Michael Addition ◽  
Room Temperature ◽  
Addition Reaction ◽  
2D Nmr ◽  
X Ray Diffraction ◽  
One Pot ◽  
X Ray ◽  
Catalyst Free ◽  
One Pot Synthesis ◽  
New Compounds

A one-pot synthesis of a novel series of chromeno-imidazo-pyridinone derivatives from 3-[(2-hydroxyphenyl)-3-oxoprop-1-en-1-yl]chromones and ethane-1,2-diamine at room temperature under catalyst-free conditions has been successfully developed. This approach involves a tandem aza-Michael addition reaction, a chromone-to-chromanone rearrangement, and a heterocyclization sequence, leading to chromeno-imidazo-pyridinone polyheterocycles. The structure and absolute configurations of the new compounds were elucidated by a combination of 1D- and 2D-NMR analyses and single-crystal X-ray diffraction.

An Expeditious One-Pot Three-Component Synthesis of 4-Aryl-3,4-dihydrobenzo[g] quinoline-2,5,10(1H)-triones under Green Conditions

2020 ◽  
Vol 23 (23) ◽  
pp. 2626-2634
Author(s):  
Saiedeh Kamalifar ◽  
Hamzeh Kiyani
Keyword(s):  
Reaction Medium ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
One Pot ◽  
One Pot Synthesis ◽  
Substituted Benzaldehydes ◽  
High Yields ◽  
First Time ◽  
Green Conditions

: An efficient and facial one-pot synthesis of 4-aryl-3,4-dihydrobenzo[g]quinoline- 2,5,10(1H)-triones was developed for the first time. The process proceeded via the three-component cyclocondensation of 2-amino-1,4-naphthoquinone with Meldrum’s acid and substituted benzaldehydes under green conditions. The fused 3,4-dihydropyridin-2(1H)- one-ring naphthoquinones have been synthesized with good to high yields in refluxing ethanol as a green reaction medium. This protocol is simple and effective as well as does not involve the assistance of the catalyst, additive, or hazardous solvents.

Novel One-pot Synthesis of Pyranocarbazole Derivatives via an Isocyanide-based Three-component Reaction

2020 ◽  
Vol 17 ◽  
Author(s):  
Visarapu Malathi ◽  
Pedavenkatagari Narayana Reddy ◽  
Pannala Padmaja
Keyword(s):  
Efficient Method ◽  
Atom Economy ◽  
Reaction Conditions ◽  
One Pot ◽  
Catalyst Free ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
High Yields

Abstract:: An efficient method has been developed for the synthesis of new pyrano[3,2-c] and pyrano[3,2-a]carbazole de-rivatives via a three component reaction of 4-hydroxycarbazole or 2-hydroxycarbazole, isocyanides, and dialkylacetylenedi-carboxylates. Noteworthy features of this protocol include mild reaction conditions, catalyst-free, high atom-economy and high yields.

Pt NPs@GO as a highly efficient and reusable catalyst for one-pot synthesis of acridinedione derivatives

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49295-49300 ◽  
Author(s):  
Handan Pamuk ◽  
Burak Aday ◽  
Fatih Şen ◽  
Muharrem Kaya
Keyword(s):  
Aromatic Aldehydes ◽  
Reusable Catalyst ◽  
One Pot ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
First Time

Pt NPs@GO has been used for the first time for synthesizing acridinedione from dimedone, aromatic aldehydes and various amines as a catalyst.

One-Pot Synthesis of Highly Substituted Allenylidene Derivatives via Palladium- or Nickel-Catalyzed Tandem Michael Addition-Cyclization Reaction

2009 ◽  
Vol 351 (1-2) ◽  
pp. 141-146 ◽  
Author(s):  
Yun Shi ◽  
Jing Huang ◽  
Yan-Fang Yang ◽  
Lu-Yong Wu ◽  
Yan-Ning Niu ◽  
...  
Keyword(s):  
Michael Addition ◽  
Cyclization Reaction ◽  
One Pot ◽  
One Pot Synthesis

ChemInform Abstract: The Thiocarbonyl “S” Is Softer than Thiolate “S”: A Catalyst-Free One-Pot Synthesis of Isothiocyanates in Water.

ChemInform ◽  
2010 ◽  
Vol 41 (32) ◽  
pp. no-no
Author(s):  
Latonglila Jamir ◽  
Abdur Rezzak Ali ◽  
Harisadhan Ghosh ◽  
Francis A. S. Chipem ◽  
Bhisma K. Patel
Keyword(s):  
One Pot ◽  
Catalyst Free ◽  
One Pot Synthesis

Isocyanide-based three component reaction for synthesis of highly cyano substituted furan derivatives

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26783-26790 ◽  
Author(s):  
Hamid Reza Safaei ◽  
Farbod Dehbozorgi
Keyword(s):  
Solvent Free ◽  
One Pot ◽  
Furan Derivatives ◽  
Catalyst Free ◽  
One Pot Synthesis ◽  
Three Component Reaction

A rapid and efficient solvent-free one-pot synthesis of novel alkyl amino aryl furan tricarbonitrile derivatives is described under catalyst-free conditions.

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