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/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

The reaction of 2,5-dihydroxyacetophenone I or 1-(1,4-dihydroxynaphthalen-2-yl)ethanone II with various 4-aryl thiosemicarbazides did not yield the expected 4-aryl-1-[1-(2,5-dihydroxyphenyl)ethylidene]thiosemicarbazides III nor 4-aryl-1-[1-(1,4-dihydroxy-naphthalen-2-yl)ethylidene]thiosemicarbazides IV, respectively. However, unexpected products were formed namely, N1,N2-bis[1-(2,5-dihydroxyphenyl)ethylidene]hydrazine V or N1,N2-bis[1-(1,4-dihydroxynaphthalen-2-yl)ethylidene]hydrazine VI, respectively. Also, an unexpected product N1,N2-bis(2,5-dimethoxybenzylidene)hydrazine XI was obtained when heating under reflux diethyl 2-(2,5-dimethoxybenzylidene)propanedioate VII or ethyl 2-cyano-3-(2,5-dimethoxyphenyl)propenoate VIII with 99% hydrazine hydrate in ethanol. The mechanisms of these reactions were proposed

Unexpected products from the reaction of different compounds with hydrazine hydrate or aryl thiosemicarbazides