scholarly journals Five-component, one-pot synthesis of an electroactive rotaxane comprising a bisferrocene macrocycle

2020 ◽  
Vol 16 ◽  
pp. 1564-1571
Author(s):  
Natalie Lagesse ◽  
Luca Pisciottani ◽  
Maxime Douarre ◽  
Pascale Godard ◽  
Brice Kauffmann ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Single Crystal ◽  
Electrochemical Properties ◽  
Acid Derivative ◽  
Isophthalic Acid ◽  
One Pot ◽  
X Ray ◽  
One Pot Synthesis ◽  
Templating Effect

The templated clipping of a ferrocene-grafted isophthalic acid derivative to encircle a hydrogen-bonding axle through the reaction with 1,4-bis(aminomethyl)benzene is described. The constituent electroactive macrocycle of the resultant [2]rotaxane is a homologue of the versatile benchmark tetraamide variant developed by Leigh and co-workers. The relative templating effect of different hydrogen-bonding motifs in rotaxane and pseudorotaxane generation is compared, with yields varying from 0 to 41%. The electrochemical properties and single crystal X-ray structure of a doubly ferrocene-decorated [2]rotaxane are further reported.

Efficient One-Pot Synthesis of Alkyl 2-(Dialkylamino)-4-phenylthiazole-5-carboxylates and Single-Crystal X-Ray Structure of Methyl 2-(Diisopropylamino)-4-phenylthiazole-5-carboxylate

2012 ◽  
Vol 95 (2) ◽  
pp. 339-348 ◽  
Author(s):  
Ali Souldozi ◽  
Ali Ramazani ◽  
Ali Reza Dadrass ◽  
Katarzyna Ślepokura ◽  
Tadeusz Lis
Keyword(s):  
Single Crystal ◽  
One Pot ◽  
X Ray ◽  
One Pot Synthesis

Stereoselective Synthesis and Single Crystal X-Ray Structures of Some Sterically Congested Electron-poor N-Vinyl Pyrazole Derivatives

2008 ◽  
Vol 63 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Nader Noshiranzadeh ◽  
Ali Ramazani ◽  
Amir Tofangchi Mahyaria ◽  
Katarzyna Ślepokurab ◽  
Tadeusz Lisb
Keyword(s):  
Nmr Spectroscopy ◽  
Structural Analysis ◽  
Single Crystal ◽  
Structure Determination ◽  
Stereoselective Synthesis ◽  
Pyrazole Derivatives ◽  
One Pot ◽  
X Ray ◽  
One Pot Synthesis ◽  
C Nmr

A one-pot synthesis of sterically congested electron-poor N-vinyl pyrazoles in fairly good yields by the reaction of ethyl 3-phenyl-2-propynoate, pyrazoles and triphenylphosphine is reported. The structures of these compounds were confirmed by IR, 1H, and 13C NMR spectroscopy, and single crystal X-ray structure determination. The structural analysis of the products indicated that the reaction is completely regio- and stereoselective.

scholarly journals One-Pot Synthesis, X-ray Single Crystal and Molecular Insight of Enaminone-Based β-Morpholino-/N-Methylpiperazinyl-/Pyrrolidinylpropiophenone

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 282
Author(s):  
Assem Barakat ◽  
Saied M. Soliman ◽  
Matti Haukka ◽  
Abdullah Mohammed Al-Majid ◽  
Mohammad Shahidul Islam ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Single Crystal ◽  
Spectroscopic Properties ◽  
Secondary Amines ◽  
Dft Studies ◽  
X Ray Diffraction ◽  
One Pot ◽  
X Ray ◽  
One Pot Synthesis ◽  
Hirshfeld Analysis

One-pot synthesis of three enaminones, (E)-1-(4-chlorophenyl)-3-morpholinoprop-2-en-1-one 1, (E)-1-(4-chlorophenyl)-3-(4-methylpiperazin-1-yl)prop-2-en-1-one 2, and (E)-1-(4-chlorophenyl)-3-(pyrrolidin-1-yl)prop-2-en-1-one 3 were achieved. The synthetic protocol via three components reaction of p-chloroacetophenone with DMFDMA (N,N-dimethylformamid-dimethylacetal) and the corresponding secondary amines (morpholine/N-methylpiperazine/pyrrolidine) in dioxane under heating for 2.5–4 h at 102 °C yielded the requisite enaminones. This protocol has the advantage of no separation of intermediate, no need for column purification with quantitative yield for the target compounds. The chemical features of the β-enaminones 1–3 were assigned by NMR. β-Enaminones 1, and 2 were assigned by single crystal X-ray diffraction technique. The intermolecular interactions in the crystal structures were analyzed quantitatively using Hirshfeld analysis. The Cl…H and O…H hydrogen bonds are common in both compounds while the C-H…π and N…H contacts are more significant in 2 than 1. DFT studies were investigated to show the electronic and spectroscopic properties (NMR and UV-Vis) of the studied systems.

Regio- And Stereoselective Addition Of Imides To Ethyl 3-Phenyl-2- Propynoate In The Presence Of Triphenylphosphine. Single Crystal X-Ray Structure Of Ethyl (Z)-2-(1,3-Dioxo-1,3,3A,4,7,7A-Hexahydro-2H-Isoindol- 2-Yl)-3-Phenyl-2-Propenoate

2007 ◽  
Vol 62 (6) ◽  
pp. 829-834 ◽  
Author(s):  
Amir Tofangchi Mahyaria ◽  
Nahid Shajari ◽  
Ali Reza Kazemizadeh ◽  
Katarzyna Ślepokura ◽  
Tadeusz Lis ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Structural Analysis ◽  
Single Crystal ◽  
Structure Determination ◽  
One Pot ◽  
X Ray ◽  
One Pot Synthesis ◽  
Stereoselective Addition ◽  
High Yields ◽  
C Nmr

A one-pot synthesis of sterically congested N-vinyl imides in fairly high yields by the reaction of ethyl 3-phenyl-2-propynoate, imides and triphenylphosphine is reported. The structures of these compounds were confirmed by IR, 1H, and 13C NMR spectroscopy, and by a single crystal X-ray structure determination. The structural analysis of the products indicated that the reaction is regioand stereoselective

scholarly journals A convenient four-component one-pot strategy toward the synthesis of pyrazolo[3,4-d]pyrimidines

2015 ◽  
Vol 11 ◽  
pp. 2125-2131 ◽  
Author(s):  
Mingxing Liu ◽  
Jiarong Li ◽  
Hongxin Chai ◽  
Kai Zhang ◽  
Deli Yang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Ir Spectroscopy ◽  
Single Crystal ◽  
Reaction Pathways ◽  
X Ray Diffraction ◽  
Pyrimidine Derivatives ◽  
One Pot ◽  
X Ray ◽  
One Pot Synthesis

An efficient one-pot synthesis of pyrazolo[3,4-d]pyrimidine derivatives by the four-component condensation of hydrazines, methylenemalononitriles, aldehydes and alcohols has been developed via two different reaction pathways. The structures of target products were characterized by IR spectroscopy, NMR (1H and 13C) spectroscopy and HRMS (ESI) spectrometry. The crystal structure of 4-ethoxy-6-(2-nitrophenyl)-1-phenyl-1H-pyrazolo[3,4-d]pyrimidine was determined by single crystal X-ray diffraction.

scholarly journals One-pot synthesis of 1,3,5-triazine-2,4-dithione derivatives via three-component reactions

2020 ◽  
Vol 16 ◽  
pp. 1447-1455 ◽  
Author(s):  
Gui-Feng Kang ◽  
Gang Zhang
Keyword(s):  
Single Crystal ◽  
Dual Role ◽  
Spectroscopic Techniques ◽  
X Ray Diffraction ◽  
One Pot ◽  
Diverse Range ◽  
X Ray ◽  
One Pot Synthesis ◽  
Synthetic Strategy

A catalyst-free one-pot synthetic methodology was developed for the preparation of 1,3,5-triazine-2,4-dithione derivatives through three-component reactions of arylaldehydes, thiourea, and orthoformates. The procedure tolerated a diverse range of arylaldehydes and orthoformates and provided a rapid entry to a variety of 4-aryl-6-(alkylthio)-3,4-dihydro-1,3,5-triazine-2(1H)-thiones (29 examples). The synthetic strategy relies on the dual role of thiourea in the cyclization with the aldehydes and the alkylation via an intermediate imidate formation. The structures of 1,3,5-triazine-2,4-dithione derivatives were characterized by spectroscopic techniques as well as by single crystal X-ray diffraction.

Facile One-Pot Synthesis and Crystal Structure of 2:1 Adducts of Myrcene (or Ocimene) with Benzoquinones

2020 ◽  
Vol 17 (8) ◽  
pp. 624-627
Author(s):  
Sujata V. Bhat ◽  
Rohan S. Pawar ◽  
P. Rajakannu
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Alder Reaction ◽  
Diels Alder ◽  
One Pot ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
One Pot Synthesis ◽  
Diels Alder Reaction

One-pot tandem oxidation and double Diels-Alder reaction of myrcene or ocimene with in situ generated 1,4-benzoquinone or 1,2-benzoquinone at 0°C for 1.5 h yielded polyalkylated 1,4,4a,5,8,8a,9a,10a-octahydro-9,10-anthracenediones and bis(alkylated) 9,10-phenanthrenedione respectively. The structure of novel bis-adduct from ocimene, (1R,4aR,5S,8aS,9aS,10aR)-rel- 1,4,4a,5,8,8a,9a,10a-octahydro-2,6-dimethyl-1,5-bis(3-methyl-2-buten-1-yl)-9,10-anthracenedione, was elucidated through single crystal X-ray analysis.

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