Ag-catalyzed cyclization of 2-alkynylbenzylazides offers a novel and efficient method for the synthesis of substituted isoquinoline. The reaction proceeds smoothly in moderate to good yields and tolerates considerable functional groups. The reaction conditions and the scope of the process are examined, and a plausible mechanism is proposed.
realized via tandem reduction and rearrangement. Using TMSOK as the catalyst and (EtO)2MeSiH as the reductant, a series of cyclic imides containing different functional groups were reduced to the corresponding 3-aryl isoquinolines in moderate to good yields. The scenario of the reaction pathway was supposed to involve the reduction of imides to ω-hydroxylactams, which underwent rearrangement in the presence
Copper-Catalyzed Domino Three-Component Benzannulation: Access to Isoquinolines
作者:Peng Ma、Yuhang Wang、Jianhui Wang
DOI:10.1021/acs.organomet.2c00195
日期:2022.8.22
We report herein the synthesis of isoquinolines through a copper(I)-catalyzed domino reaction. During this transformation, three molecules of terminal alkynes, 2-bromoaryl aldehydes (ketones), and acetamide react together, in a sequence including Sonogashira coupling, condensation, 6-endo-dig cyclization, elimination of acetic acid, and hydrolysis. In this reaction, isoquinolines with broad functional
Base-Promoted Synthesis of Isoquinolines through a Tandem Reaction of 2-Methyl-arylaldehydes and Nitriles
作者:Sujuan Shuai、Jianyou Mao、Fan Zhou、Qifeng Yan、Lingfeng Chen、Jie Li、Patrick J. Walsh、Guang Liang
DOI:10.1021/acs.joc.4c00123
日期:2024.5.17
A convenient method for preparing 3-aryl isoquinolines via a base-promoted tandem reaction is presented. Simply combining commercially available 2-methyl-arylaldehydes, benzonitriles, NaN(SiMe3)2, and Cs2CO3 enabled the synthesis of a variety of isoquinolines (23 examples, ≤90% yield). Among the syntheses of isoquinolines, the transition metal-free method described here is straightforward, practical
提出了一种通过碱促进的串联反应制备 3-芳基异喹啉的简便方法。简单地组合市售的2-甲基芳基醛、苯甲腈、NaN(SiMe 3 ) 2和Cs 2 CO 3就可以合成多种异喹啉(23个实例,≤90%产率)。在异喹啉的合成中,本文描述的无过渡金属方法简单、实用且操作简单。
5, 6, OR 7-SUBSTITUTED-3-(HETERO)ARYLISOQUINOLINAMINE DERIVATIVES AS ANTITUMOR AGENTS