A convenient synthesis of pyrandione derivatives using P-toluenesulfonic acid as catalyst under ultrasound irradiation

N Benosmane, B Boutemeur, SM Hamdi… - Journal of Fundamental …, 2016 - ajol.info
Abstract A new series of 3, 3'-{alkane-α, ω-diylbis [imino-eth-1-yl-1-ylidene]} bis (6-methyl-
2H-pyran-2, 4 (3H)-dione) derivatives (3c-e) has been synthesized by the convenient …

[HTML][HTML] A novel and convenient synthesis of 4-hydroxy-6-methyl-3-(1-(phenylimino) ethyl)-2H-pyran-2-one derivatives under ultrasound irradiation

H Wang, Y Zou, X Zhao, D Shi - Ultrasonics sonochemistry, 2011 - Elsevier
A facile, efficient and environment-friendly protocol for the synthesis of 4-hydroxy-6-methyl-3-
(1-(phenylimino) ethyl)-2H-pyran-2-one derivatives has been developed by the convenient …

Ultrasound promoted three‐component synthesis of dihydroindeno[1,2‐b]pyrrole derivatives

F Nasuhipur, Z Ghasemi, A Shahrisa… - Journal of Heterocyclic …, 2023 - Wiley Online Library
In this work, a one‐pot three‐component reaction of ninhydrin, primary amines, and 1, 3‐
dicarbonyl compounds was investigated under various conditions to synthesis of diverse …

[HTML][HTML] An efficient synthesis of pyrido [2, 3-d] pyrimidine derivatives and related compounds under ultrasound irradiation without catalyst

S Tu, L Cao, Y Zhang, Q Shao, D Zhou, C Li - Ultrasonics sonochemistry, 2008 - Elsevier
A series of pyrido [2, 3-d] pyrimidine derivatives and related compounds were synthesized
via the condensation reaction of an aldehyde, 2, 6-diaminopyrimidine-4 (3H)-one and either …

Ultrasound Assisted Synthesis of Some Novel Bis‐Pyridazine Derivatives

AEM Mekky, AS Al‐Bogami - Journal of Heterocyclic Chemistry, 2016 - Wiley Online Library
Bis‐enaminone 3 was coupled with aryldiazonium chlorides 4a, 4b to afford the bis‐
arylhydrazonopropanals 6a, 6b. Compounds 6a, 6b could be utilized for the synthesis of a …

An efficient ultrasound promoted one-pot three-component synthesis and antibacterial activities of novel pyrimido [4, 5-b] quinoline-4, 6 (3H, 5H, 7H, 10H)-dione …

MS Jourshari, M Mamaghani… - Letters in Organic …, 2012 - ingentaconnect.com
A series of novel pyrimido [4, 5-b] quinoline-4, 6 (3H, 5H, 7H, 10H)-dione derivatives was
synthesized by one-pot three-component reaction of the appropriate aldehyde, dimedone or …

Ultrasound-Promoted One-Pot, Four-Component Synthesis of Pyridin-2(1H)-One Derivatives

J Yang, Q Li, J Zhang, W Lin, J Wang, Y Wang… - Molecules, 2013 - mdpi.com
An efficient one-pot synthesis of 1, 6-diamino-2-oxo-1, 2, 3, 4-tetrahydro-pyridine-3, 5-
dicarbonitrile derivatives by four-component piperidine-catalyzed reactions of a ketone …

[HTML][HTML] Symmetrical ammonium dibromide as an efficient promoter for the ultrasonic irradiation multi-component preparation of pyrrolidine derivatives

M Khalaj, SM Khatami, M Ghashang - Results in Chemistry, 2023 - Elsevier
In this work, a method has been developed for the formal, multi-component reaction of
cyclopropyl dicarboxylates, aldehydes, and amines under ultrasonic irradiation. The …

[HTML][HTML] Rapid and efficient one-pot synthesis of spiro [indoline-3, 4′-pyrano [2, 3-c] pyrazole] derivatives catalyzed by l-proline under ultrasound irradiation

W Liju, K Ablajan, F Jun - Ultrasonics sonochemistry, 2015 - Elsevier
A rapid and efficient ultrasound-promoted one-pot synthesis of spiro [indoline-3, 4′-pyrano
[2, 3-c] pyrazole] derivatives is described here. The reaction of substituted phenylhydrazine …

[HTML][HTML] Use of ultrasound and microwave irradiation for clean and efficient synthesis of 3, 3'-(arylmethylene) bis (2-hydroxynaphthalene-1, 4-dione) derivatives

AS de Oliveira, LC Lianes, RJ Nunes, RA Yunes… - Green and Sustainable …, 2014 - scirp.org
Nine 3, 3'-(arylmethylene) bis (2-hydroxynaphthalene-1, 4-dione) derivatives were
synthesized through the reaction between 2-hydroxy-1, 4-naphthalen-1, 4-dione and …