Organic bases catalyze the synthesis of urea from ammonium salts derived from recovered environmental ammonia.
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2020
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Abstract
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 100āĀ°C. Moreover, DBU also converts other ammonium salts into urea. A mechanism that involves nucleophilic attack of ammonia following ion exchange is proposed.| Reference Key |
manaka2020organicscientific
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| Authors | Manaka, Yuichi;Nagatsuka, Yuki;Motokura, Ken; |
| Journal | Scientific reports |
| Year | 2020 |
| DOI | 10.1038/s41598-020-59795-6 |
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