Organic bases catalyze the synthesis of urea from ammonium salts derived from recovered environmental ammonia

Ammonia from sewage and livestock manure is a major environmental pollutant. To consume environmental ammonia, we investigated the organic base-catalyzed synthesis of urea. 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) catalyzes the conversion of ammonium carbamate to urea in 35% yield at 100 °C. Moreove...

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Autores principales: Manaka, Yuichi, Nagatsuka, Yuki, Motokura, Ken
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7028734/
https://www.ncbi.nlm.nih.gov/pubmed/32071338
http://dx.doi.org/10.1038/s41598-020-59795-6
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author Manaka, Yuichi
Nagatsuka, Yuki
Motokura, Ken
author_facet Manaka, Yuichi
Nagatsuka, Yuki
Motokura, Ken
author_sort Manaka, Yuichi
collection PubMed
description Ammonia from sewage and livestock manure is a major environmental pollutant. To consume environmental ammonia, we investigated the organic base-catalyzed synthesis of urea. 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) catalyzes the conversion of ammonium carbamate to urea in 35% yield at 100 °C. Moreover, DBU also converts other ammonium salts into urea. A mechanism that involves nucleophilic attack of ammonia following ion exchange is proposed.
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spelling pubmed-70287342020-02-26 Organic bases catalyze the synthesis of urea from ammonium salts derived from recovered environmental ammonia Manaka, Yuichi Nagatsuka, Yuki Motokura, Ken Sci Rep Article Ammonia from sewage and livestock manure is a major environmental pollutant. To consume environmental ammonia, we investigated the organic base-catalyzed synthesis of urea. 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) catalyzes the conversion of ammonium carbamate to urea in 35% yield at 100 °C. Moreover, DBU also converts other ammonium salts into urea. A mechanism that involves nucleophilic attack of ammonia following ion exchange is proposed. Nature Publishing Group UK 2020-02-18 /pmc/articles/PMC7028734/ /pubmed/32071338 http://dx.doi.org/10.1038/s41598-020-59795-6 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Manaka, Yuichi
Nagatsuka, Yuki
Motokura, Ken
Organic bases catalyze the synthesis of urea from ammonium salts derived from recovered environmental ammonia
title Organic bases catalyze the synthesis of urea from ammonium salts derived from recovered environmental ammonia
title_full Organic bases catalyze the synthesis of urea from ammonium salts derived from recovered environmental ammonia
title_fullStr Organic bases catalyze the synthesis of urea from ammonium salts derived from recovered environmental ammonia
title_full_unstemmed Organic bases catalyze the synthesis of urea from ammonium salts derived from recovered environmental ammonia
title_short Organic bases catalyze the synthesis of urea from ammonium salts derived from recovered environmental ammonia
title_sort organic bases catalyze the synthesis of urea from ammonium salts derived from recovered environmental ammonia
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7028734/
https://www.ncbi.nlm.nih.gov/pubmed/32071338
http://dx.doi.org/10.1038/s41598-020-59795-6
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AT motokuraken organicbasescatalyzethesynthesisofureafromammoniumsaltsderivedfromrecoveredenvironmentalammonia

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