An efficient Biginelli one-pot synthesis of new benzoxazole-substituted dihydropyrimidinones and thiones catalysed by trifluoro acetic acid under solvent-free conditions

2009 ◽  
Vol 20 (9) ◽  
pp. 1059-1061 ◽  
Author(s):  
D. Shobha ◽  
M. Adharvana Chari ◽  
K.H. Ahn
Keyword(s):  
Acetic Acid ◽  
Solvent Free ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions

scholarly journals Tandem Fries Reaction–Conjugate Addition under Microwave Irradiation in Dry Media; One-pot Synthesis of Flavanones

1999 ◽  
Vol 23 (9) ◽  
pp. 574-575
Author(s):  
Firouz Matloubi Moghaddam ◽  
Mohammad Ghaffarzadeh ◽  
Seyed Hossein Abdi-Oskoui
Keyword(s):  
Microwave Irradiation ◽  
Silica Gel ◽  
Conjugate Addition ◽  
Solvent Free ◽  
Naphthalene Derivatives ◽  
One Pot ◽  
Fries Rearrangement ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Fries Reaction

An AICl3–ZnCl2 mixture supported on silica gel is found to be an efficient medium for the Fries rearrangement of acyloxybenzene or naphthalene derivatives in solvent-free conditions under microwave irradiation.

scholarly journals Synthesis of 2,4,6-triarylpyridines Using AlPO4 Under Solvent-free Conditions

2010 ◽  
Vol 2 (2) ◽  
pp. 337-342 ◽  
Author(s):  
P. Rajput ◽  
N. J. P. Subhashini ◽  
Shiva Raj
Keyword(s):  
Heterogeneous Catalyst ◽  
Simple Procedure ◽  
Reaction Times ◽  
Aluminum Phosphate ◽  
Solvent Free ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions

A series of 2,4,6-triarylpyridines have been prepared using a variety of aromatic and heteroaromatic aldehydes in the presence of aluminum phosphate (AlPO4) as a heterogeneous catalyst at 120 oC under solvent-free conditions. The present methodology offers several advantages such as excellent yields, simple procedure, shorter reaction times, milder conditions and the catalyst exhibited remarkable reusable activity. Keywords: Aluminum phosphate; 2,4,6-triarylpyridines; One-pot synthesis; Shorter reaction times;  Reusable activity.  © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v2i2.3859               J. Sci. Res. 2 (2), 337-342 (2010) 

Solvent-free, one-pot synthesis of 2,4,6-triarylpyridines using trichloroisocyanuric acid or N-bromosuccinimide as a novel and neutral catalyst

2011 ◽  
Vol 76 (11) ◽  
pp. 1307-1315 ◽  
Author(s):  
Behrooz Maleki ◽  
Hafezeh Salehabadi ◽  
Zeinalabedin Sepehr ◽  
Mina Kermanian
Keyword(s):  
Ammonium Acetate ◽  
Solvent Free ◽  
One Pot ◽  
Aryl Aldehydes ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Trichloroisocyanuric Acid

A simple and benign protocol has been explored for the preparation of 2,4,6-triarylpyridines by a one-pot reaction between aryl aldehydes, enolizable ketones and ammonium acetate in the presence of N-bromosuccinimide or trichloroisocyanuric acid as green and neutral catalysts. The reactions proceed smoothly at 130 °C under solvent-free conditions to provide 2,4,6-triarylpyridines in good yields.

A Novel L-Proline Catalyzed Biginelli Reaction: One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones under Solvent-Free Conditions

2004 ◽  
Vol 33 (9) ◽  
pp. 1168-1169 ◽  
Author(s):  
J. S. Yadav ◽  
S. Praveen Kumar ◽  
G. Kondaji ◽  
R. Srinivasa Rao ◽  
K. Nagaiah
Keyword(s):  
Biginelli Reaction ◽  
Solvent Free ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions

scholarly journals An Efficient One-Pot Synthesis of Tetrahydrobenzo Xanthen-11-one Derivatives Catalyzed by P2O5 under Solvent Free Conditions

2018 ◽  
Vol 30 (4) ◽  
pp. 804-806 ◽  
Author(s):  
Krishna Kanth Garlapati ◽  
Siva Sankar Babu ◽  
N. Srinivasu ◽  
T. Murthy Chavali
Keyword(s):  
Solvent Free ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions
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