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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

An unprecedented and efficient methodology for the synthesis of 2,4-dichloro-substituted pyrano[2,3- d ]pyrimidines and 2,4-dichloro-substituted furo[2,3- d ]-pyrimidines is conducted through the one-pot heterocyclization and four-component condensation of acetophenone derivatives, various aromatic aldehydes/potassium iodide, malononitrile, and carbon tetrachloride. The cerium(IV) ammonium nitrate (CAN) was used as a single electron oxidant and ionic liquid (HTPB) as a green promoter under mild conditions at ambient temperature for synthesizing pyrimidine derivatives in high yields. A possible radical mechanism is proposed for these transformations. CAN is found to play an essential role in each step of the reaction. The major advantages of this methodology are experimentally simplicity, environmentally benign, nontoxic, and inexpensive catalyst, excellent yields, and short reaction times.

polycyclic aromatic compounds

Four-Component Heterocyclization Reaction for the One-Pot Synthesis of 2,4-Dichloro-Substituted Pyrano/Furo[2,3- d ]pyrimidines in an Environmentally Benign Procedure Mediated by Ceric Ammonium Nitrate in Phosphorus Ionic Liquid