ChemInform Abstract: Polymer Supported Sulfanilic Acid: A Highly Efficient and Recyclable Green Heterogeneous Catalyst for the Construction of 4,5-Dihydropyrano[3,2-c]chromenes under Solvent-Free Conditions.

ChemInform ◽  
2013 ◽  
Vol 44 (44) ◽  
pp. no-no
Author(s):  
Jashmin P. Patel ◽  
Jemin R. Avalani ◽  
Dipak K. Raval
Keyword(s):  
Heterogeneous Catalyst ◽  
Sulfanilic Acid ◽  
Solvent Free ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
Polymer Supported

ChemInform Abstract: ZnO Nanoparticles as a Highly Efficient Heterogeneous Catalyst for the Synthesis of Various Chromene and Pyrano[4,3-b]pyran Derivatives under Solvent-Free Conditions.

ChemInform ◽  
2015 ◽  
Vol 46 (35) ◽  
pp. no-no
Author(s):  
Zinatossadat Hossaini ◽  
Fatemeh Sheikholeslami-Farahani ◽  
Samira Soltani ◽  
S. Zahra Sayyed-Alangi ◽  
Hadi Sajjadi-Ghotabadi
Keyword(s):  
Heterogeneous Catalyst ◽  
Zno Nanoparticles ◽  
Solvent Free ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
Efficient Heterogeneous Catalyst

A highly efficient and green approach for the synthesis of pyrimido[4,5-b]quinolines using N,N-diethyl-N-sulfoethanaminium chloride

2021 ◽  
Vol 76 (2) ◽  
pp. 85-90
Author(s):  
Abdolkarim Zare ◽  
Manije Dianat
Keyword(s):  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Catalyst Amount ◽  
Green Protocol ◽  
Highly Efficient ◽  
Green Approach ◽  
Solvent Free Conditions ◽  
The One ◽  
High Yields

Abstract A highly efficient and green protocol for the synthesis of pyrimido[4,5-b]quinolines has been described. The one-pot multicomponent reaction of dimedone with arylaldehydes and 6-amino-1,3-dimethyluracil in the presence of N,N-diethyl-N-sulfoethanaminium chloride ([Et3N–SO3H][Cl]) as an ionic liquid (IL) catalyst under solvent-free conditions afforded the mentioned compounds in high yields and short reaction times. Our protocol is superior to many of the reported protocols in terms of two or more of these factors: the reaction times, yields, conditions (solvent-free versus usage of organic solvents), temperature and catalyst amount.

scholarly journals Solvent-free synthesis of symmetric methylene diesters via direct reaction of aromatic carboxylates with 1,n-dihaloalkanes

RSC Advances ◽  
2021 ◽  
Vol 11 (46) ◽  
pp. 28711-28715
Author(s):  
Lin Bai ◽  
Shenglong Ding ◽  
Xiaofang Ma
Keyword(s):  
Solvent Free ◽  
Direct Reaction ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
Aromatic Carboxylates ◽  
Solvent Free Synthesis

This work provides a highly efficient and feasible strategy for the synthesis of symmetric methylene diesters, involving the direct diesterification of various carboxylates with 1,n-dihaloalkanes under solvent-free conditions.

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