158905-35-2Relevant articles and documents
Cu-Catalyzed Dimerization of Indole Derived Oxime Acetate for Synthesis of Biimidazo[1,2- a]indoles
Xie, Tao,Sui, Qi-Bang,Qin, Lu-Zhe,Wen, Xiaoan,Sun, Hongbin,Xu, Qing-Long,Zhen, Le
, p. 5518 - 5529 (2021/05/04)
A copper-mediated cyclization and dimerization of indole derived oxime acetate was developed to generate a series of biimidazo[1,2-a]indole scaffolds with two contiguous stereogenic quaternary carbons in one step.
Organocatalytic Formal (3 + 2) Cycloaddition toward Chiral Pyrrolo[1,2- a]indoles via Dynamic Kinetic Resolution of Allene Intermediates
Bai, Jian-Fei,Zhao, Lulu,Wang, Fang,Yan, Fachao,Kano, Taichi,Maruoka, Keiji,Li, Yuehui
supporting information, p. 5439 - 5445 (2020/07/14)
We report the chiral phosphoric acid catalyzed formal (3 + 2) cycloaddition of 3-substituted 1H-indoles and propargylic alcohols containing a functional directing group (p-NHAc or p-OH). This work represents a straightforward method to synthesize chiral pyrrolo[1,2-a]indole bearing a tetrasubstituted carbon stereocenter. The reaction proceeds smoothly with a wide array of substrate tolerance to deliver various chiral pyrrolo[1,2-a]indoles in up to 93percent yield and 98percent ee. The utility of this method is highlighted by the diverse transformations of the products into various indole derivatives.
Highly diastereoselective oxa-[3+3] cyclization with C,N-cyclic azomethine imines: Via the copper-catalyzed aerobic oxygenated CC bond of indoles
Yu, Lemao,Zhong, Yuan,Yu, Jicong,Gan, Lu,Cai, Zhengjun,Wang, Rui,Jiang, Xianxing
, p. 2353 - 2356 (2018/03/09)
Herein, a copper-catalyzed highly diastereoselective aerobic oxygenated [3+3] cyclization of 3-substituted indoles with C,N-cyclic azomethine imines using oxygen as the sole oxidant under mild conditions has been developed. This protocol provides a simple and convenient approach for constructing [2,3]-fused indoline O-heterocycles bearing two pharmaceutically intriguing parts, tetrahydroisoquinoline and indoline. Good yields and excellent diastereoselectivity under mild reaction conditions were observed.