89609-46-1Relevant articles and documents
An Improved Synthesis of Urea Derivatives from N -Acylbenzotriazole via Curtius Rearrangement
Agrahari, Anand K.,Singh, Anoop S.,Singh, Sumit K.,Tiwari, Vinod K.,Yadav, Mangal S.
, p. 3443 - 3450 (2019/09/07)
The good leaving tendency of the benzotriazole moiety has been exploited for the synthesis of symmetric, unsymmetric, N -acyl, and cyclic ureas in good yields from N -acylbenzotriazoles by treating the latter with various amines in the presence of TMSN 3 /Et 3 N in a sealed tube. The salient features of the devised protocol includes the high-yield, mild, metal-free, one-pot reaction conditions, and short reaction time. Furthermore, in many cases, no column chromatography is required for the purification.
Novel Direct Synthesis of Asymmetrical Urea Compounds from Trichloroethyl Carbamates Using Catalytic DBU
Jang, Ho Seong,Kim, Hee-Kwon
supporting information, p. 1515 - 1518 (2017/12/04)
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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