Sulfated polyborate: a new and eco-friendly catalyst for one-pot multi-component synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones via Biginelli reaction

2016 ◽  
Vol 40 (12) ◽  
pp. 10412-10417 ◽  
Author(s):  
Chetan K. Khatri ◽  
Deelip S. Rekunge ◽  
Ganesh U. Chaturbhuj
Keyword(s):  
Biginelli Reaction ◽  
Solvent Free ◽  
Synthetic Methodology ◽  
One Pot ◽  
Free Condition ◽  
Sulfated Polyborate ◽  
Highly Efficient ◽  
Excellent Yield ◽  
Solvent Free Condition

A highly efficient and improved synthetic methodology for the preparation of 3,4-dihydropyrimidin-2(1H)-one derivatives in good to excellent yield via Biginelli reaction of β-ketoesters/β-diketone, urea/thiourea and various aldehydes using new, efficient and recyclable sulfated polyborate catalyst under the solvent-free condition is reported.

SYNTHESIS OF SOME PROPARGYLAMINES VIA A3 COUPLING REACTION

2020 ◽  
Vol 65 (10) ◽  
pp. 67-72
Author(s):  
Thanh Hoang Thi ◽  
Trang Tran Thi Thu ◽  
Hoan Duong Quoc
Keyword(s):  
Coupling Reaction ◽  
Solvent Free ◽  
One Pot ◽  
Free Condition ◽  
Highly Efficient ◽  
Solvent Free Condition ◽  
A3 Coupling

Condition for synthesis of propargylamines has been found in highly efficient as a one-pot multi-component protocol. Copper(I) iodide (30% mol) under solvent free condition gave propargylamine in good yields. Structures of propargylamines were elucidated with NMR, MS methods.

scholarly journals Highly Efficient Acetalization and Ketalization Catalyzed by Cobaloxime under Solvent-Free Condition

Catalysts ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 48 ◽  
Author(s):  
Yang Zong ◽  
Liting Yang ◽  
Shanyu Tang ◽  
Longjia Li ◽  
Wanjie Wang ◽  
...  
Keyword(s):  
Solvent Free ◽  
Free Condition ◽  
Highly Efficient ◽  
Solvent Free Condition

One-pot three-component synthesis of bis(indolyl)methanes under solvent-free condition using heteropoly-11-tungsto-1-vanadophosphoric acid supported on natural clay as catalyst

2017 ◽  
Vol 47 (9) ◽  
pp. 913-927 ◽  
Author(s):  
Karuppaiah Selvakumar ◽  
Thangamariyappan Shanmugaprabha ◽  
Ramamoorthy Annapoorani ◽  
Ponnusamy Sami
Keyword(s):  
Solvent Free ◽  
Natural Clay ◽  
One Pot ◽  
Free Condition ◽  
Solvent Free Condition
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