55305-60-7Relevant academic research and scientific papers
Pd/C-catalyzed reductive carbonylation of nitroaromatics for the synthesis of unsymmetrical ureas: One-step synthesis of neburon
Li, Chong-Liang,Peng, Jin-Bao,Qi, Xinxin,Ying, Jun,Wu, Xiao-Feng
supporting information, p. 12472 - 12475 (2018/08/04)
A Pd/C catalyzed reductive carbonylation of nitroarenes for the synthesis of unsymmetrical ureas has been developed. Using inexpensive and stable nitroarenes as the substrates, a series of unsymmetrical ureas were produced in moderate to good yields. A range of functional groups including thioethers, halides and vinyl were compatible with this reaction. As a heterogeneous catalyst, Pd/C was recycled and reused four times without losing activity. Notably, urea-based herbicide neburon was prepared in 64% yield under our standard conditions.
Cobalt(II)-catalyzed isocyanide insertion reaction with amines under ultrasonic conditions: A divergent synthesis of ureas, thioureas and azaheterocycles
Zhu, Tong-Hao,Xu, Xiao-Ping,Cao, Jia-Jia,Wei, Tian-Qi,Wang, Shun-Yi,Ji, Shun-Jun
supporting information, p. 509 - 518 (2014/05/20)
Cobalt(II) acetylacetonate-catalyzed isocyanide insertion reactions with amines utilizing tert-butyl hydroperoxide (TBHP) as an oxidant under ultrasound conditions have been developed, which lead to the synthesis of ureas, thioureas, as well as 2-aminoben
Iron(III) catalysed synthesis of unsymmetrical di and trisubstituted ureas - A variation of classical Ritter reaction
Basavaprabhu, Hosamani,Sureshbabu, Vommina V.
supporting information; experimental part, p. 2528 - 2533 (2012/04/23)
An application of the classical Ritter reaction for the synthesis of unsymmetrical di and trisubstituted ureas catalyzed by FeCl3 is described. The protocol is of significant interest in view of the easy availability of precursors, mild reaction conditions employed and interestingly its applicability for the alkylation of alcohols capable of forming stable carbocationic intermediates even to the sterically hindered moieties. The Royal Society of Chemistry 2012.
The efficient synthesis of carbodiimides using a titanium imido complex
Anderson, James C.,Bou-Moreno, Rafael
experimental part, p. 9182 - 9186 (2011/01/12)
An efficient rt synthesis of carbodiimides or ureas from the combination of a titanium imido complex 2 and a range of 12 aryl and aliphatic isocyanates is described. Control experiments suggest that carbodimide formation is via heterocumulene metathesis t
