scholarly journals Phosphine ligands and nitrogen bases in the solvent-free Heck reaction of butenone with aryl iodides. A highly selective synthesis of benzalacetones

ARKIVOC ◽  
2003 ◽  
Vol 2003 (8) ◽  
pp. 58-66 ◽  
Author(s):  
Sandro Cacchi ◽  
Giancarlo Fabrizi ◽  
Antonella Goggiamani
Keyword(s):  
Heck Reaction ◽  
Phosphine Ligands ◽  
Solvent Free ◽  
Selective Synthesis ◽  
Nitrogen Bases ◽  
Aryl Iodides

scholarly journals Selective Synthesis of N-Acylnortropane Derivatives in Palladium-Catalysed Aminocarbonylation

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1813
Author(s):  
László Kollár ◽  
Ádám Erdélyi ◽  
Haroon Rasheed ◽  
Attila Takács
Keyword(s):  
Synthetic Method ◽  
Selective Synthesis ◽  
Varied Structure ◽  
Biological Importance ◽  
Aryl Iodides ◽  
Palladium Catalyzed ◽  
Derivatives Of

The aminocarbonylation of various alkenyl and (hetero)aryl iodides was carried out using tropane-based amines of biological importance, such as 8-azabicyclo[3.2.1]octan-3-one (nortropinone) and 3α-hydroxy-8-azabicyclo[3.2.1]octane (nortropine) as N-nucleophile. Using iodoalkenes, the two nucleophiles were selectively converted to the corresponding amide in the presence of Pd(OAc)2/2 PPh3 catalysts. In the presence of several iodo(hetero)arenes, the application of the bidentate Xantphos was necessary to produce the target compounds selectively. The new carboxamides of varied structure, formed in palladium-catalyzed aminocarbonylation reactions, were isolated and fully characterized. In this way, a novel synthetic method has been developed for the producing of N-acylnortropane derivatives of biological importance.

Sustainable Passerini-tetrazole three component reaction (PT-3CR): selective synthesis of oxaborol-tetrazoles

2021 ◽  
Vol 57 (76) ◽  
pp. 9708-9711
Author(s):  
Akansha Singh ◽  
Ravindra Kumar
Keyword(s):  
Solvent Free ◽  
Selective Synthesis ◽  
Three Component Reaction ◽  
First Time

A sustainable catalyst- and solvent-free Passerini-tetrazole three component reaction (PT-3CR) has been developed for the selective synthesis of benzoxaborol-tetrazoles for the first time.

Selective synthesis of conjugated enynes from α-arylalkynols using LiCl-Acidic Al2O3 under solvent-free conditions

2002 ◽  
Vol 2002 (8) ◽  
pp. 378-380 ◽  
Author(s):  
Ali Pourjavadi ◽  
Gholam Bagheri Marandi
Keyword(s):  
Solvent Free ◽  
Selective Synthesis ◽  
Solvent Free Conditions ◽  
Conjugated Enynes

α-Arylalkynols were converted into conjugated enynes (in a selective manner under solvent-free conditions) using the LiCl-acidic Al2O3 couple as catalyst and support.

Palladium-catalyzed Mizoroki–Heck reaction of allyl aryl ethers with aryl iodides using phosphine-free hydrazone ligands

2009 ◽  
Vol 50 (38) ◽  
pp. 5358-5360 ◽  
Author(s):  
Takashi Mino ◽  
Hiroaki Shindo ◽  
Tomoko Kaneda ◽  
Tomoko Koizumi ◽  
Yoshio Kasashima ◽  
...  
Keyword(s):  
Heck Reaction ◽  
Aryl Iodides ◽  
Palladium Catalyzed ◽  
Aryl Ethers ◽  
Hydrazone Ligands

Solvent-free, under air selective synthesis of α-glycosides adopting glycosyl chlorides as donors

2020 ◽  
Vol 18 (27) ◽  
pp. 5157-5163 ◽  
Author(s):  
Serena Traboni ◽  
Giulia Vessella ◽  
Emiliano Bedini ◽  
Alfonso Iadonisi
Keyword(s):  
Stereoselective Synthesis ◽  
Tetrabutylammonium Bromide ◽  
Solvent Free ◽  
Selective Synthesis

A solvent-free, under air approach for the highly stereoselective synthesis of α-glycosides from glycosyl chloride donors, promoted by a triethylphosphite, tetrabutylammonium bromide, and N,N-diisopropylethylamine combination.

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