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

1,2,5-Oxadiazinan-3,6-diones (8), easily available by cyclic carbonylation of α-amino-carbohydroxamic acids 7 with 1,1’-carbonyldiimidazole, are reacted with hydrazine to give 3- aminohydantoins (10). Depending on the substituents R 1 /R’ 8 was found to undergo an imidazole catalyzed oxidoreduction to 4-imidazolidinones (11) or α-iminophenylacetamides (12).

Synthese und Ringumwandlungen von 1,2,5-Oxadiazinan-3,6-dionen / Synthesis and Ring Transformations of 1,2,5-Oxadiazinan-3,6-diones