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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The reactions of isatins, 3-amino-1-pheyl-1 H -pyrazol-5(4 H )-one, and monocyclic ketones, have been developed for preparation of spiro[indoline-3,4'-pyrazolo[3,4- b ]quinoline]-2,3'(6' H )-dione, spiro[cyclohepta[ b ]pyrazolo[4,3- e ]pyridine-4,3'-indoline]-2′,3-dione, spiro[cycloocta[ b ]pyrazolo[4,3- e ]pyridine-4,3'-indoline]-2′,3(6 H )-dione, and spiro[cyclo dodeca[ b ]pyrazolo[4,3- e ]pyridine-4,3'-indoline]-2′,3(6 H )-dione derivatives in aqueous and acetic acid mixed medium. Studies have shown that water was an excellent medium for this reaction. The significant features of this method are wide substrate scope, high yields, operational simplicity, and minimal environment impact.

polycyclic aromatic compounds

Green and Efficient Synthesis of Spiroheterocyclic Compounds from Reactions of Isatins, 3-Amino-1-phenyl-1 H -pyrazol-5(4 H )-one, and Monocyclic Ketones