Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/95598
標題: Facile synthesis of 2-benzimidazolones via carbonylation of o-phenylenediamines with CO2
作者: Manuri Brahmayya
Shenghong A. Dai
孫幸宜
Shing-Yi Suen
出版社: JOURNAL OF CO2 UTILIZATION
摘要: An efficient synthesis for the benzimidazolones and various 1,3-disubstituted urea derivatives prepared from several nucleophiles like o-phenylenediamines and o-aminophenols with CO2 (1 MPa) under transition-metal-free or acetate complex free conditions has been developed. A variety of chemicals were synthesized in moderate to good yields promoted by tributylamine (TBA) using the nucleophiles and CO2 as a green and renewable C1 source. The cyclization of CO2 and o-phenylenediamine offered a general and straightforward synthesis of benzimidazolones and cyclic ureas promoted by the inexpensive and environmentally-friendly TBA as the carbonylation catalyst. Thus, various valuable cyclic ureas and their carbonyl homologs were synthesized in good yields through this green carbonylation process.
URI: http://hdl.handle.net/11455/95598
文章連結: https://www.sciencedirect.com/science/article/pii/S2212982017303347
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