Palladium-Catalyzed Annulation of Acyloximes with Arynes (or Alkynes): Synthesis of Phenanthridines and Isoquinolines
作者:Thibaud Gerfaud、Luc Neuville、Jieping Zhu
DOI:10.1002/anie.200804683
日期:2009.1.5
Intermolecular insertion: A palladium‐catalyzed domino aminopalladation/ CH functionalization sequence has been developed, and provides access to functionalized phenanthridines and isoquinolines (see scheme; Tf=triflate, TMS=trimethylsilyl, M.S.=molecular sieves). The use of butyronitrile as the solvent is determinant to the success of the domino process.
分子间插入:钯催化的多米诺aminopalladation / C ħ官能序列已被开发,并提供访问官能菲啶和异喹啉(参见方案; TF =三氟甲磺酸酯,TMS =三甲基甲硅烷,MS =分子筛)。丁腈作为溶剂的使用决定了多米诺骨牌工艺的成功。
Molecular Oxygen-Mediated Minisci-Type Radical Alkylation of Heteroarenes with Boronic Acids
作者:Lizhi Zhang、Zhong-Quan Liu
DOI:10.1021/acs.orglett.7b03297
日期:2017.12.15
The carbon–carbonbondformation via autoxidation of organoboronic acid using 1 atm of O2 is achieved in a simple, clean, and green fashion. The approach allows a technically facile and environmentally benign access to structurally diverse heteroaromatics with medicinally privileged scaffolds. The strategy also displays its practicality and sustainability in the resynthesis of marketed drugs Crestor
C–H Alkylation of Heteroarenes with Alkyl Oxalates by Molecular Photoelectrocatalysis
作者:Hai-Chao Xu、Fan Xu、Xiao-Li Lai
DOI:10.1055/a-1296-8652
日期:2021.3
An oxidant- and metal-free photoelectrocatalytic C–H alkylation reaction of heteroarenes with alkyloxalates has been developed. Several classes of heteroaromatics, such as quinolines, isoquinolines, pyridines, and phenanthridines, can be alkylated with tertiary or secondary alkyloxalates. The photoelectrochemical synthesis employs 2,4,5,6-tetra-9H-carbazol-9-ylisophthalonitrile as a molecular catalyst
PPh<sub>3</sub>/NaI driven photocatalytic decarboxylative radical cascade alkylarylation reaction of 2-isocyanobiaryls
作者:Ketan Wadekar、Suraj Aswale、Veera Reddy Yatham
DOI:10.1039/d0ra03211e
日期:——
PPh3/NaI driven photocatalytic decarboxylative cyclization of 2-isocyanobiaryls with alkyl NHP esters was developed. This simple protocol afforded a novel and environmentally friendly approach to furnish 6-alkyl phenanthridines in good yields.