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。
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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.
Ultrasound mediated catalyst free synthesis of 6H-1-benzopyrano[4,3-b]quinolin-6-ones leading to novel quinoline derivatives: Their evaluation as potential anti-cancer agents
作者:Naveen Mulakayala、D. Rambabu、Mohan Rao Raja、Chaitanya M.、Chitta Suresh Kumar、Arunasree M. Kalle、G. Rama Krishna、C. Malla Reddy、M.V. Basaveswara Rao、Manojit Pal
DOI:10.1016/j.bmc.2011.12.001
日期:2012.1
reaction of 4-chloro-2-oxo-2H-chromene-3-carbaldehyde with various aromatic amines in the presence of ultrasound. Some of these compounds were converted to the corresponding 2-(3-(hydroxymethyl)quinolin-2-yl)phenols and further structure elaboration of a representative quinoline derivative is presented. Molecular structure of two representative compounds was confirmed by single crystal X-ray diffraction
通过4-氯-2-氧代-2 H的反应可轻松合成无催化的6 H -1-苯并吡喃并[4,3- b ]喹啉-6--苯甲基-3-甲醛与各种芳香胺在超声波的作用下。这些化合物中的一些被转化为相应的2-(3-(羟甲基)喹啉-2-基)苯酚,并给出了代表性喹啉衍生物的进一步结构详述。通过单晶X射线衍射研究证实了两种代表性化合物的分子结构。评估了其中许多化合物在体外对四种癌细胞系的抗增殖特性,发现几种化合物具有活性。进一步的体外研究表明,抑制沉默调节蛋白可能是这些分子起作用的可能机制。
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.