Sml2-promoted aryl radical cyclization. A new synthetic entry into heterocycles
摘要:
Benzofuran, naphthofuran, and indole frameworks were expediently constructed at ambient temperature from arene bromides with ortho O- and N-substituents containing double or triple bonds via radical cyclization process promoted by Sml2.
A palladium-catalyzed asymmetric hydrogenation of unprotected 3-substituted indoles was developed, providing a series of 3-substituted indolines in excellent yields with ≤94.4:5.6 er. The large sterically hindered bisphosphine ligand played a crucial role in the enantioselective control. In addition, the gram-scale hydrogenation experiment and product derivatizations were performed successfully.
开发了一种钯催化的未保护的 3-取代吲哚的不对称氢化,以 ≤94.4:5.6 er 的优异收率提供了一系列 3-取代二氢吲哚。大的空间位阻双膦配体在对映选择性控制中起着至关重要的作用。此外,成功地进行了克级加氢实验和产品衍生化。
Nickel Catalyzed Alkylation of Oxindoles with Alkyl Alcohols
作者:Adrija Ghosh、Atanu Bera、Debasis Banerjee
DOI:10.1002/cctc.202201433
日期:2023.2.20
Alkylation with alcohols: Herein, nickel-catalyzed hydrogen borrowing strategy was employed for alkylation of 2-oxindoles using alkyl alcohols. Initial mechanisticstudies, deuterium labelling experiments and late stage synthetic modulation of the alkylated products were performed.
The invention provides new heterocyclic compounds having the general Formula (I), or a pharmaceutically acceptable salt thereof,
wherein R
1
, R
2
, X, Y
1
and Y
2
are as described herein, compositions including the compounds, processes of manufacturing the compounds and methods of using the compounds.
Sml2-promoted aryl radical cyclization. A new synthetic entry into heterocycles
作者:Junji Inanaga、Osamu Ujikawa、Masaru Yamaguchi
DOI:10.1016/s0040-4039(00)74317-6
日期:1991.4
Benzofuran, naphthofuran, and indole frameworks were expediently constructed at ambient temperature from arene bromides with ortho O- and N-substituents containing double or triple bonds via radical cyclization process promoted by Sml2.
Monoamine Oxidase (MAO-N) Biocatalyzed Synthesis of Indoles from Indolines Prepared via Photocatalytic Cyclization/Arylative Dearomatization
作者:Fei Zhao、Domiziana Masci、Salvatore Ferla、Carmine Varricchio、Andrea Brancale、Serena Colonna、Gary W. Black、Nicholas J. Turner、Daniele Castagnolo
DOI:10.1021/acscatal.0c01351
日期:2020.6.5
The biocatalytic aromatization of indolines into indole derivatives exploiting monoamine oxidase (MAO-N) enzymes is presented. Indoline substrates were prepared via photocatalytic cyclization of arylaniline precursors or via arylative dearomatization of unsubstituted indoles and in turn chemoselectively aromatized by the MAO-N D11 wholecell biocatalyst. Computational docking studies of the indoline