Palladium-Catalyzed Formal [4 + 1] Annulation via Metal Carbene Migratory Insertion and C(sp<sup>2</sup>)–H Bond Functionalization
作者:Shuai Xu、Ri Chen、Zihao Fu、Qi Zhou、Yan Zhang、Jianbo Wang
DOI:10.1021/acscatal.6b03562
日期:2017.3.3
A highly efficient and operationally simple palladium-catalyzed formal [4 + 1] annulationreaction has been developed. The reaction is featured by the formation of two different C–C bonds on a carbenic center. It represents a concise method for the synthesis of a wide range of polycyclic aromatic hydrocarbons (PAHs) and 1H-indenes with easily available (trimethylsilyl)diazomethane as the carbene source
Nickel-Catalyzed Cyclization Strategy for the Synthesis of Pyrroloquinolines, Indoloquinolines, and Indoloisoquinolines
作者:Sampath Thavaselvan、Kanniyappan Parthasarathy
DOI:10.1021/acs.orglett.0c01055
日期:2020.5.15
An inexpensive and benchtop stable Ni-catalyst/Zn system for the synthesis of pyrrolo/indoloquinolines and indolo[2,1-a]isoquinolines is explored. This platform provides a one-pot entry for the preparation of various pyrrolo and indoloquinolines/isoquinolines, which involves successive C-C and C-N bond formation, respectively. In addition, we have also performed the preliminary photophysical studies
One-Pot Synthesis of Pyrrolo[1,2-<i>a</i>]quinoxaline Derivatives via a Copper-Catalyzed Aerobic Oxidative Domino Reaction
作者:Huanhuan Liu、Tiantian Duan、Zeyuan Zhang、Caixia Xie、Chen Ma
DOI:10.1021/acs.orglett.5b01167
日期:2015.6.19
A copper-catalyzed process for the synthesis of pyrrolo[1,2-a]quinoxalines from readily available α-amino acids and 1-(2-halophenyl)-1H-pyrroles is described. Different functional groups were well tolerated to give the corresponding products.
描述了一种铜催化的方法,该方法由容易获得的α-氨基酸和1-(2-卤代苯基)-1 H-吡咯合成吡咯并[1,2- a ]喹喔啉。不同的官能团具有良好的耐受性,可提供相应的产品。
Synthesis of pyrrolo[1,2-a]quinolines and ullazines by visible light mediated one- and twofold annulation of N-arylpyrroles with arylalkynes
作者:Amrita Das、Indrajit Ghosh、Burkhard König
DOI:10.1039/c6cc04366f
日期:——
Fused nitrogen heterocycles and ullazines are synthesised by one and twofold annulation of N-arylpyrroles with arylalkynes using metal free visible light photocatalysis.
SBA-15-functionalized melamine-pyridine group-supported palladium(0) as an efficient heterogeneous and recyclable nanocatalyst for<i>N</i>-arylation of indoles through Ullmann-type coupling reactions
SBA‐15‐functionalized melamine–pyridine group‐supported palladium(0) was found to serve as a heterogeneous and recyclable nanocatalyst for N‐arylation of indoles with aryl iodides under a low catalyst loading (0.3 mol% of Pd) through Ullmann‐type CN couplingreactions. A variety of aryl iodides could be aminated to provide the N‐arylated products in good to excellent yields without the need of an