An efficient conversion of β-diketones into β-keto enol ethers with P₂O₅/SiO₂ under solvent-free conditions

Abstract

P 2 O 5 /SiO 2 was found to be an efficient reagent for converting cyclic-b-diketones into their corresponding b-keto enol ethers at room temperature under solvent-free conditions.

H3PW12O40 encapsulation by nanoporous metal organic framework HKUST-1: Synthesis, characterization, activity and stability

“…[25][26][27] Also, they act as dienophiles in Diels-Alder reactions. 28 However, the synthesis of β-keto enol ethers has received little attention despite their wide range of applications [29][30][31] and developing a new, cost-effective and green protocol for this transformation is still a challenging task. The present work reports the use of H 3 PW 12 O 40 on HKUST-1 (PW/HKUST-1) as an active and recyclable catalyst in the synthesis of β-keto enol ethers.…”

Synthesis of 14-aryl-14H-dibenzo[a,j]xanthene Derivatives Catalysed by Expanded Graphite under Solvent-Free Condition

“…The application of heterogeneous acid catalysts in place of homogeneous acid catalysts in organic transformations is an attractive area of research. [1][2][3][4] The advantages of heterogeneous catalysts over homogeneous catalysts include stability, lack of corrosion, ease of handling, recovery and regeneration. Expanded graphite (EG) is a new biomedical material, 5 which can be used as a catalyst and a novel carbon support material.…”