Dearomatization drives complexity generation in freshwater organic matter.

ABSTRACT: Dissolved organic matter (DOM) is one of the most complex, dynamic and abundant sources of organic carbon, but its chemical reactivity remains uncertain^1-3. Greater insights into DOM structural features could facilitate understanding its synthesis, turnover and processing in the global carbon cycle^4,5. Here we use complementary multiplicity-edited ¹³C nuclear magnetic resonance (NMR) spectra to quantify key substructures assembling the carbon skeletons of DOM from four main Amazon rivers and two mid-size Swedish boreal lakes. We find that one type of reaction mechanism, oxidative dearomatization (ODA), widely used in organic synthetic chemistry to create natural product scaffolds^6-10, is probably a key driver for generating structural diversity d

SUBMITTER: Li S 

PROVIDER: S-EPMC11043043 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature