Metal‐free Transformations of Nitrogen‐Oxyanions to Ammonia via Oxoammonium Salt

Autor:	Balakrishnan S. Anju, Tuhin Sahana, Aditesh Mondal, Subrata Kundu
Rok vydání:	2021
Předmět:	chemistry.chemical_classification Reaction mechanism Nitrosonium Salt (chemistry) General Chemistry General Medicine Catalysis chemistry.chemical_compound Ammonia Benzylamine chemistry Ferrocene Polymer chemistry Reactivity (chemistry) NOx
Zdroj:	Angewandte Chemie. 133:20829-20833
ISSN:	1521-3757 0044-8249
DOI:	10.1002/ange.202105723
Popis:	Transformations of nitrogen-oxyanions (NOx- ) to ammonia impart pivotal roles in sustainable biogeochemical processes. While metal-mediated reductions of NOx- are relatively well known, this report illustrates proton-assisted transformations of NOx- anions in the presence of electron-rich aromatics such as 1,3,5-trimethoxybenzene (TMB-H, 1 a) leading to the formation of diaryl oxoammonium salt [(TMB)2 N+ =O][NO3- ] (2 a) via the intermediacy of nitrosonium cation (NO+ ). Detailed characterizations including UV/Vis, multinuclear NMR, FT-IR, HRMS, X-ray analyses on a set of closely related metastable diaryl oxoammonium [Ar2 N+ =O] species disclose unambiguous structural and spectroscopic signatures. Oxoammonium salt 2 a exhibits 2 e- oxidative reactivity in the presence of oxidizable substrates such as benzylamine, thiol, and ferrocene. Intriguingly, reaction of 2 a with water affords ammonia. Perhaps of broader significance, this work reveals a new metal-free route germane to the conversion of NOx to NH3 .
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f4028517cddc740e3ecfef2462eaac1 https://doi.org/10.1002/ange.202105723 Zobrazit plný text záznamu Plný text ve formátu PDF