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

The theoretical global and local electrophilicity patterns of substituted and chelated4-oxo-4H-benzopyran-3-carbaldehydes (formylchromones) have been evaluated using the electrophilicityindex proposed by Parr et al [J. Am. Chem. Soc. 1999, 121, 1922]. The complexation of formylchromoneswith aluminum predicts a strong electrophilic character of these compounds against nucleophiles.Local response at the active sites may also be assessed in terms of a global contribution described bythe global electrophilicity, and a local contribution described by the variations in electrophilicFukui function at those sites. The highest local electrophilicity is found at the formyl group ofthe chelated formylchromones, in spite of that, the highest positive charge is located on the pyronecarbonyl group. This result is consistent with the experimental observed reactivity displayed by4-oxo-4H-benzopyran-3-carbaldehydes in the presence of 2-propanol and alumina

ON THE REDUCTION OF 4-OXO-4H-BENZOPYRAN-3-CARBALDEHYDES: GLOBAL AND LOCAL ELECTROPHILICITY PATTERNS

ON THE REDUCTION OF 4-OXO-4H-BENZOPYRAN-3-CARBALDEHYDES: GLOBAL AND LOCAL ELECTROPHILICITY PATTERNS