TEMPO-catalyzed oxidative dimerization and cyanation of indoles for the synthesis of 2-(1H-indol-3-yl)-3-oxoindoline-2-carbonitriles
作者:Lili Jiang、Xiangjun Peng、Panpan Huang、Zhengwang Chen、Liangxian Liu
DOI:10.1016/j.tet.2017.01.032
日期:2017.3
A method for the combinative oxidative homo dimerization and cyanation of free indole derivatives catalysed by TEMPO along with silver carbonate was demonstrated for the first time This new methodology is both atom and step efficient and is applicable to a broad scope of substrates, allowing the synthesis of a range of synthetically valuable 2-(1H-indol-3-yl)-3-oxoindoline- 2-carbonitriles in moderate
Chiral phosphoric acid-catalyzed direct asymmetric mannich reaction of cyclic<i>C</i>-acylimines with simple ketones: facile access to C2-quaternary indolin-3-ones
作者:Jin-Shan Li、Yong-Jie Liu、Shen Li、Jun-An Ma
DOI:10.1039/c8cc05125a
日期:——
A chiral Brønsted acid-catalyzed directasymmetric Mannich reaction of simple ketones with cyclic C-acylimines has been established for the synthesis of C2-quaternary indolin-3-ones. In the presence of 5–10 mol% chiral phosphoric acid, a series of 2-(2-oxo-2-phenylethyl)-2-arylindolin-3-ones were obtained in good to high yield with up to 99% ee. The adducts obtained could be readily converted into
建立了手性布朗斯台德酸催化的简单酮类与环状C-酰基亚胺的直接不对称曼尼希反应,用于合成C2-季吲哚-3-酮。在5-10 mol%手性磷酸的存在下,以高达99%ee的良好或高收率获得了一系列2-(2-氧代-2-苯基乙基)-2-芳基吲哚-3-酮。通过简单的修饰,可以容易地将获得的加合物转化为二氢吲哚,三环吲哚-3-酮和四环四氢吲哚并[1,2- a ]喹啉。
Reactions of indoles with nitrogen dioxide and nitrous acid in an aprotic solvent
The reaction of 2-phenyl- and 1-methyl-2-phenylindole with nitrogen dioxide or with nitrousacid (NaNO2-CH3COOH) in benzene leads mainly to the formation of the isonitroso and 3-nitroso indole derivatives, respectively. When reacted with nitrousacid, 1-methyl-2-phenylindole gives also the corresponding azo-bis-indole in good yields. The reaction of indole with nitrogen dioxide leads to 2-(indol-3-yl)-3H-indol-3-one
[EN] TREATMENT OF INFECTIOUS DISEASE<br/>[FR] TRAITEMENT D'UNE MALADIE INFECTIEUSE
申请人:UNIV ALBERTA
公开号:WO2019183729A1
公开(公告)日:2019-10-03
The present disclosure relates to 2-(3 -indolyl)indolin-3 -one derivatives of the natural product isatisine A, synthesized from dual catalytic synthesis on metalocarbene-azide cascade chemistry, useful for treating a subject having or suspected of having an infectious disease, wherein said infectious disease is caused by a virus, wherein the virus is from the family flaviviridae or paramyxoviridae.
Catalytic Asymmetric Mukaiyama–Mannich Reaction of Cyclic <i>C</i>-Acylimines with Difluoroenoxysilanes: Access to Difluoroalkylated Indolin-3-ones
作者:Jin-Shan Li、Yong-Jie Liu、Guang-Wu Zhang、Jun-An Ma
DOI:10.1021/acs.orglett.7b03213
日期:2017.12.1
A catalytic enantioselective Mukaiyama-Mannich reaction of cyclic C-acylimines with difluoroenoxysilanes is reported.(S)-TRIP enables the enantioselective synthesis of a series of novel difluoroalkylated indolin-3-ones bearing a quaternary stereocenter in up to 97% yield and 98% ee. The synthetic utility of this protocol is highlighted by efficient conversion of the products to the corresponding indolin-3-one derivatives without any erosion of the enantiopurity.