TMSOTf-catalyzed intramolecular seleno-arylation of tethered alkenes: A novel method for the solid-phase synthesis of dihydrocoumarins and coumarins
摘要:
TMSOTf-catalyzed intramolecular seleno-arylation of tethered alkenes was performed using polystyrene-supported succinimidyl selenide as the selenium source. This catalytic process provides an efficient method for the regioselective synthesis of dihydrocoumarins possessing a seleno-functionality, followed by traceless cleavage of selenium linker to provide dihydrocoumarins and coumarins in good yields and purities. (C) 2012 E Tang. Published by Elsevier B.V on behalf of Chinese Chemical Society. All rights reserved.
TMSOTf-catalyzed intramolecular seleno-arylation of tethered alkenes: A novel method for the solid-phase synthesis of dihydrocoumarins and coumarins
摘要:
TMSOTf-catalyzed intramolecular seleno-arylation of tethered alkenes was performed using polystyrene-supported succinimidyl selenide as the selenium source. This catalytic process provides an efficient method for the regioselective synthesis of dihydrocoumarins possessing a seleno-functionality, followed by traceless cleavage of selenium linker to provide dihydrocoumarins and coumarins in good yields and purities. (C) 2012 E Tang. Published by Elsevier B.V on behalf of Chinese Chemical Society. All rights reserved.
TMSOTf-catalyzed intramolecular seleno-arylation of tethered alkenes: A novel method for the solid-phase synthesis of dihydrocoumarins and coumarins
摘要:
TMSOTf-catalyzed intramolecular seleno-arylation of tethered alkenes was performed using polystyrene-supported succinimidyl selenide as the selenium source. This catalytic process provides an efficient method for the regioselective synthesis of dihydrocoumarins possessing a seleno-functionality, followed by traceless cleavage of selenium linker to provide dihydrocoumarins and coumarins in good yields and purities. (C) 2012 E Tang. Published by Elsevier B.V on behalf of Chinese Chemical Society. All rights reserved.
An environmentally-benign electrochemical approach for the construction of quinoline derivatives employing N,N-dimethylformamide (DMF) as the methine source has been devised by cyclization of 4-(phenylamino)-2H-chromen-2-ones. In a user-friendly undivided cell, 6H-chromeno[4,3-b]quinolin-6-ones were obtained under chemical oxidant-free and transition-metal-free conditions in 43–92% yields with high
已经通过 4-(苯基氨基) -2H -chromen-2-ones的环化设计了一种环境友好的电化学方法,用于构建使用N,N-二甲基甲酰胺 (DMF) 作为次甲基源的喹啉衍生物。在用户友好的无隔膜电解槽,6H -chromeno [4,3- b ]喹啉-6-酮进行化学氧化剂-自由和过渡金属-自由条件下在具有高功能性公差43-92%的产率获得。
NH
<sub>4</sub>
OAc‐Promoted Cascade Approach towards Aberrant Synthesis of Chromene‐Fused Quinolinones
作者:Santosh Kumari、S. M. Abdul Shakoor、Datta Markad、Sanjay K. Mandal、Rajeev Sakhuja
DOI:10.1002/ejoc.201801292
日期:2019.1.31
A concise cascade, metal‐free strategy for the synthesis of chromene‐fusedquinolinones was developed. This strategy is scalable, and an array of arylhydrazine hydrochlorides delivered chromene‐fusedquinolinones in good to excellent yields.
Iron/acetic acid mediated intermolecular tandem C–C and C–N bond formation: an easy access to acridinone and quinoline derivatives
作者:R. R. Rajawinslin、Sachin D. Gawande、Veerababurao Kavala、Yi-Hsiang Huang、Chun-Wei Kuo、Ting-Shen Kuo、Mei-Ling Chen、Chiu-Hui He、Ching-Fa Yao
DOI:10.1039/c4ra06410k
日期:——
An efficient iron/acetic acid mediated one pot reductive cyclization protocol was successfully developed for the synthesis of acridinone and quinoline derivatives.
Solvent- and Catalyst-Free Synthesis of 6<i>H</i>-Chromeno [4,3-<i>b</i>]quinolin-6-ones
作者:Prasanta Patra
DOI:10.1080/00304948.2020.1868911
日期:2021.3.4
(2021). Solvent- and Catalyst-Free Synthesis of 6H-Chromeno [4,3-b]quinolin-6-ones. Organic Preparations and Procedures International: Vol. 53, No. 2, pp. 184-189.
An efficient ultrasound promoted catalyst-free protocol for the synthesis of chromeno[4,3-b]quinolin-6-ones
作者:J VENKATA PRASAD、J SATYANARAYANA REDDY、N RAVI KUMAR、K ANAND SOLOMON、G GOPIKRISHNA
DOI:10.1007/s12039-011-0134-z
日期:2011.9
A convenient, catalyst-free protocol for the quantitative synthesis of fused chromeno[4,3-b]quinolin-6-ones has been developed by simple one-pot reaction of substituted anilines with 4-chloro-3-formylcoumarin using ultrasound irradiation. The protocol offers the advantages of mild reaction conditions, short reaction times and high yields.