63992-45-0Relevant academic research and scientific papers
A copper-catalyzed oxidative coupling reaction of arylboronic acids, amines and carbon dioxide using molecular oxygen as the oxidant
Xiong, Wenfang,Qi, Chaorong,Guo, Tianzuo,Zhang, Min,Chen, Kai,Jiang, Huanfeng
, p. 1642 - 1645 (2017/06/05)
A Cu-catalyzed oxidative coupling reaction of arylboronic acids, amines and carbon dioxide is described for the first time in this paper. The reaction tolerates a wide range of functional groups, providing a convenient protocol for the synthesis of various O-aryl carbamates. The successful development of the transformation was enabled by the use of BF3·OEt2 as the promoter and molecular oxygen as the oxidant. Mechanistic studies suggested that the CuII carbamato complex is involved in the catalytic transformation.
Lithiation of a silyl ether: Formation of an ortho-fries hydroxyketone
Lo, Hong-Jay,Lin, Chin-Yin,Tseng, Mei-Chun,Chein, Rong-Jie
supporting information, p. 9026 - 9029 (2014/09/17)
A hydroxy-directed alkylation of an N,N-diethylarylamide using CIPE-assisted α-silyl carbanions (CIPE=complex-induced proximity effect) has been developed using a simple reagent combination of LDA (lithium diisopropylamide) and chlorosilane. A study of the mechanism, and the application of the procedure to an anionic Snieckus-Fries rearrangement for a highly efficient synthesis of the potent phosphatidylinositol 3-kinase (PI3K) inhibitor LY294002, are reported.
Remote Directed Metalation of Biaryl o-Carbamates. Ring to Ring Carbamoyl Transfer Route to Biaryls, Dibenzopyranones, and the Natural Fluorenone Dengibsin
Wang, Wei,Snieckus, Victor
, p. 424 - 426 (2007/10/02)
A new remote metalation, carbamoyl transfer process (Scheme I), is demonstrated and elaborated for the regiospecific synthesis of highly hindered biaryls, dibenzopyranones (Table I), and the naturally occurring fluorenone dengibsin (15).
