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

Cyclization of the title compounds may occur in various ways (e.g., with the participation of C-6 or C-4 atom of the pyridazinone ring) to form differently fused pyridazino ring systems. The regiochemistry was found to be particularly dependent on the length of the side chain: from the hydroxyethylamino derivatives pyridazino[3,4-b]oxazines, and from hydroxypropylamino derivatives pyridazino[3,4-b]oxazepine and pyridazino[4,5-b]oxazepine systems were formed.

Ring Closure Reactions of 4-Chloro-5-hydroxyalkylamino-6-nitro-3(2H)- pyridazinones: Synthesis of Novel Pyridazino-Fused Ring Systems