English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Environmentally benign, facile, and efficient one-pot three-component synthesis of pyrano[2,3- d ]pyrimidine-2,4,7-trione derivatives by the reaction of aromatic aldehyde, barbituric acid and Meldrum’s acid employing recently reported agro-waste catalyst WELFSA (Water Extract Lemon Fruit Shell Ash) from our group is described. The reaction found efficient in ultrasound at room temperature and took about 40 min for the reaction to complete. The catalyst has significant features in the present protocol gave high yield, simple reaction condition, non-hazardous, and not required chromatographic purification. The application of the ultrasound in organic synthesis is fulfilling some of the goals of the ‘greener and sustainable chemistry’, as it has some advantages over the traditional thermal methods in terms of reaction rates, yields and purity of the products. All the synthesized derivatives are characterized by FT-IR,  1 H and  13 C-NMR and mass spectrometry.

Expedite Greener Method Synthesis of Pyrano[2,3- d ]Pyrimidine-2,4,7-Triones Accelerated by Ultrasound Irradiation