Syntheses of novel diaryl[d,f ][1,3]diazepines via one-pot Suzuki coupling followed by direct ring closure with carboxylic acids

2012 ◽  
Vol 16 (3) ◽  
pp. 489-501 ◽  
Author(s):  
Longjia Yan ◽  
Xin Che ◽  
Xu Bai ◽  
Yazhong Pei
Keyword(s):  
Carboxylic Acids ◽  
Suzuki Coupling ◽  
Ring Closure ◽  
One Pot

Synthesis of 3-(Cyclohexylamino)-2-arylimidazo[1,2-a]pyridine-8- carboxylic Acids Via an Efficient Three-component Condensation Reaction between Cyclohexylisocyanide and 2-Aminopyridine-3-carboxylic Acid in the Presence of Aromatic Aldehyde

2018 ◽  
Vol 21 (4) ◽  
pp. 298-301 ◽  
Author(s):  
Ghasem Marandi
Keyword(s):  
Biological Sciences ◽  
Carboxylic Acid ◽  
Carboxylic Acids ◽  
High Performance ◽  
Condensation Reaction ◽  
Aromatic Aldehydes ◽  
New Materials ◽  
One Pot ◽  
High Yields ◽  
Benzaldehyde Derivatives

Aim and Objective: The reaction of cyclohexylisocyanide and 2-aminopyridine-3- carboxylic acid in the presence of benzaldehyde derivatives in ethanol led to 3-(cyclohexylamino)-2- arylimidazo[1,2-a]pyridine-8-carboxylic acids in high yields. In a three component condensation reaction, isocyanide reacts with 2-aminopyridine-3-carboxylic acid and aromatic aldehydes without any prior activation. Material and Methods: The synthesized products have stable structures which have been characterized by IR, 1H, 13C and Mass spectroscopy as well as CHN-O analysis. Results: In continuation of our attempts to develop simple one-pot routes for the synthesis of 3- (cyclohexylamino)-2-arylimidazo[1,2-a]pyridine-8-carboxylic acids, aromatic aldehydes with divers substituted show a high performance. Conclusion: In conclusion, this study introduces the art of combinatorial chemistry using a simple one-pot procedure for the synthesis of new materials which are interesting compounds in medicinal and biological sciences.

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.

Mild one-pot conversion of carboxylic acids to amides or esters with Ph3P/trichloroisocyanuric acid

2005 ◽  
Vol 46 (35) ◽  
pp. 5945-5947 ◽  
Author(s):  
Rogério da C. Rodrigues ◽  
Igor M.A. Barros ◽  
Edson L.S. Lima
Keyword(s):  
Carboxylic Acids ◽  
One Pot ◽  
Trichloroisocyanuric Acid

Amides in One Pot from Carboxylic Acids and Amines via Sulfinylamides

2014 ◽  
Vol 16 (2) ◽  
pp. 604-607 ◽  
Author(s):  
Jianfei Bai ◽  
Bartosz K. Zambroń ◽  
Pierre Vogel
Keyword(s):  
Carboxylic Acids ◽  
One Pot

A MILD, ONE-POT METHOD FOR THE CONVERSION OF CARBOXYLIC ACIDS INTO THE CORRESPONDING WEINREB AMIDES

2001 ◽  
Vol 31 (13) ◽  
pp. 2011-2019 ◽  
Author(s):  
Martin Banwell ◽  
Jason Smith
Keyword(s):  
Carboxylic Acids ◽  
One Pot ◽  
Weinreb Amides
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