Versatile synthesis of functionalised dibenzothiophenes via Suzuki coupling and microwave-assisted ring closure

2011 ◽  
Vol 9 (17) ◽  
pp. 6066 ◽  
Author(s):  
Sonsoles Rodriguez-Aristegui ◽  
Kate M. Clapham ◽  
Lauren Barrett ◽  
Céline Cano ◽  
Marine Desage-El Murr ◽  
...  
Keyword(s):  
Suzuki Coupling ◽  
Ring Closure ◽  
Microwave Assisted

Direct Arylation of Imidazo[1,2-b]pyridazines: Microwave-Assisted One-Pot Suzuki Coupling/Pd-Catalysed Arylation

2010 ◽  
Vol 2010 (5) ◽  
pp. 862-871 ◽  
Author(s):  
Ahmed El Akkaoui ◽  
Sabine Berteina-Raboin ◽  
Abderrahim Mouaddib ◽  
Gérald Guillaumet
Keyword(s):  
Suzuki Coupling ◽  
One Pot ◽  
Direct Arylation ◽  
Microwave Assisted

scholarly journals Syntheses of 3,4- and 1,4-dihydroquinazolines from 2-aminobenzylamine

2017 ◽  
Vol 13 ◽  
pp. 1470-1477 ◽  
Author(s):  
Jimena E Díaz ◽  
Silvia Ranieri ◽  
Nadia Gruber ◽  
Liliana R Orelli
Keyword(s):  
Reaction Times ◽  
Ring Closure ◽  
Cesium Carbonate ◽  
Amino Groups ◽  
Microwave Assisted ◽  
Common Precursor ◽  
Alkylation Reactions

A straightforward strategy for the synthesis of dihydroquinazolines is presented, which allows for the preparation of 3,4- and 1,4-dihydroquinazolines with different substitution patterns from 2-aminobenzylamine (2-ABA) as common precursor. The required functionalization of both amino groups present in 2-ABA was achieved by different routes involving selective N-acylation and cesium carbonate-mediated N-alkylation reactions, avoiding protection/deprotection steps. The heterocycles were efficiently synthesized in short reaction times by microwave-assisted ring closure of the corresponding aminoamides promoted by ethyl polyphosphate (PPE).

Microwave-assisted, solventless Suzuki coupling reactions on palladium-doped alumina

2000 ◽  
Vol 2 (3) ◽  
pp. 120-122 ◽  
Author(s):  
George W. Kabalka ◽  
Richard M. Pagni ◽  
Lei Wang ◽  
Vasudevan Namboodiri ◽  
C. Maxwell Hair
Keyword(s):  
Suzuki Coupling ◽  
Coupling Reactions ◽  
Microwave Assisted

ChemInform Abstract: Synthesis of Polysubstituted Imidazo[1,2-a]pyridines via Microwave-Assisted One-Pot Cyclization/Suzuki Coupling/Palladium-Catalyzed Heteroarylation.

ChemInform ◽  
2008 ◽  
Vol 39 (6) ◽  
Author(s):  
Jamal Koubachi ◽  
Said El Kazzouli ◽  
Sabine Berteina-Raboin ◽  
Abderrahim Mouaddib ◽  
Gerald Guillaumet
Keyword(s):  
Suzuki Coupling ◽  
One Pot ◽  
Microwave Assisted ◽  
Palladium Catalyzed

scholarly journals Microwave-assisted cyclizations promoted by polyphosphoric acid esters: a general method for 1-aryl-2-iminoazacycloalkanes

2016 ◽  
Vol 12 ◽  
pp. 2026-2031 ◽  
Author(s):  
Jimena E Díaz ◽  
María C Mollo ◽  
Liliana R Orelli
Keyword(s):  
Polyphosphoric Acid ◽  
General Procedure ◽  
Reaction Times ◽  
Ring Closure ◽  
Heterocyclic Synthesis ◽  
Microwave Assisted ◽  
Solvent Free Conditions ◽  
High Yields ◽  
Acid Esters ◽  
General Method

The first general procedure for the synthesis of 5 to 7-membered 1-aryl-2-iminoazacycloalkanes is presented, by microwave-assisted ring closure of ω-arylaminonitriles promoted by polyphosphoric acid (PPA) esters. 1-Aryl-2-iminopyrrolidines were easily prepared from the acyclic precursors employing a chloroformic solution of ethyl polyphosphate (PPE). The use of trimethylsilyl polyphosphate (PPSE) in solvent-free conditions allowed for the synthesis of 1-aryl-2-iminopiperidines and hitherto unreported 1-aryl-2-iminoazepanes. The cyclization reaction involves good to high yields and short reaction times, and represents a novel application of PPA esters in heterocyclic synthesis.

Microwave-Assisted Suzuki Coupling Reactions with an Encapsulated Palladium Catalyst for Batch and Continuous-Flow Transformations

2006 ◽  
Vol 12 (16) ◽  
pp. 4407-4416 ◽  
Author(s):  
Ian R. Baxendale ◽  
Charlotte M. Griffiths-Jones ◽  
Steven V. Ley ◽  
Geoffrey K. Tranmer
Keyword(s):  
Palladium Catalyst ◽  
Continuous Flow ◽  
Suzuki Coupling ◽  
Coupling Reactions ◽  
Microwave Assisted

scholarly journals Synthesis of xanthine derivatives by microwave-assisted ring closure reaction

ARKIVOC ◽  
2005 ◽  
Vol 2006 (2) ◽  
pp. 77-82
Author(s):  
Joachim C. Burbiel ◽  
Jörg Hockemeyer ◽  
Christa E. Müller
Keyword(s):  
Ring Closure ◽  
Microwave Assisted ◽  
Xanthine Derivatives
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