247237-62-3Relevant articles and documents
Electrochemical Sulfenylation of 4-Hydroxycoumarins with Aryl Thiols Catalyzed by Potassium Iodide
Jin, Jiali,Zhao, Lingmin,Zhang, Chao,Liu, Xin,Yin, Wenxu,Shen, Zhenlu,Li, Meichao
, (2021/03/08)
A KI-catalyzed indirect electrochemical oxidative method for the synthesis of sulfenylated 4-hydroxycoumarins via cross-coupling of 4-hydroxycoumarins and aryl thiols at a low potential has been reported. The electrocatalytic activity of KI for sulfenylat
HBr/H2O2-mediated formation of C–S bond with thiosulfates
Zhang, Rongxing,Jin, Shengzhou,Wan, Yuanxing,Lin, Sen,Yan, Zhaohua
, p. 841 - 847 (2018/02/06)
A novel, efficient, and green protocol to construct C–S bond has been developed via HBr/H2O2-mediated sulfenylation of styrenes and 4-hydroxycoumarins leading to unsymmetrical sulfides. Various unsymmetrical sulfides were prepared in one step with moderate to good yields using environmentally-friendly H2O2 as oxidant and HBr as catalyst. Based on the preliminary experimental results, a plausible reaction mechanism was proposed for HBr/H2O2-mediated formation of C–S bond with thiosulfates.
Microwave-Assisted Synthesis and Antimicrobial Activity of 3-(Arylsulfanyl)-4-hydroxy-2H-chromen-2-ones
Anjaiah, Ch.,Nagamani,Abraham Lincoln, Ch.,Ashok
, p. 2149 - 2153 (2018/12/11)
An efficient microwave-assisted synthesis of 3-(arylsulfanyl)-4-hydroxy-2H-chromen-2-ones by condensation of arenesulfonohydrazides with 4-hydroxy-2H-chromen-2-one in the presence of iodine is described. The synthesized compounds were characterized by spe
Iodine-mediated sulfenylation of 4-hydroxycoumarins with sulfonyl hydrazides under aqueous conditions
Yang, Zan,Yan, Yueqiao,Li, An,Liao, Jiashu,Zhang, Lei,Yang, Tao,Zhou, Congshan
supporting information, p. 14738 - 14741 (2018/09/29)
An efficient, metal-free approach to the synthesis of sulfenylated coumarins based on the iodine catalyzed regioselective sulfenylation of 4-hydroxycoumarins with arylsulfonyl hydrazides was developed under mild conditions in water. Various sulfenylated c
3-thioaryl-4-hydroxycoumarin derivative and synthesis method thereof
-
Paragraph 0023, (2018/03/28)
The invention relates to a preparation method of a 3-thioaryl-4-hydroxycoumarin derivative, and belongs to the field of organic synthesis. The preparation method comprises the following steps: with a4-hydroxycoumarin derivative, sulfur powder and an iodobenzene derivative as raw materials, adding a ligand, an alkali source and a catalyst, and reacting in a solvent to obtain the 3-thioaryl-4-hydroxycoumarin derivative. A sulfur source used in the synthesis is cheap, easy to obtain, stable in performance and environment-friendly; the synthesis method is low in cost, high in reaction yield, mildin condition and easy to operate, and is suitable for industrial production. The derivative has potential application in the field of materials and medicines; by the preparation method, a novel way is provided for the synthesis of the 3-thioaryl-4hydroxycoumarin derivative.
Ammonium Iodide-Mediated Sulfenylation of 4-Hydroxycoumarins or 4-Hydroxyquinolinones with a Sulfonyl Chloride as a Sulfur Source
Guo, Tao,Wei, Xu-Ning
supporting information, p. 2499 - 2504 (2017/10/06)
A novel ammonium iodide-induced sulfenylation of 4-hydroxycoumarins or 4-hydroxyquinolinones by using an aryl- or alkylsulfonyl chloride as the sulfur source gave a wide range of 3-sulfanyl-4-hydroxycoumarins or 3-sulfanyl-4-hydroxyquinolinones, respectiv
Iodine catalyzed cross-dehydrogenative C-S coupling by C(sp2)-H bond activation: Direct access to aryl sulfides from aryl thiols
Parumala, Santosh Kumar Reddy,Peddinti, Rama Krishna
supporting information, p. 4068 - 4072 (2015/07/15)
A novel, efficient and unprecedented green protocol for the formation of C-S bonds has been developed under metal-free conditions. This protocol involves the synthesis of aryl sulfides through the cross-dehydrogenative coupling of readily available aryl t
Synthesis, antibacterial, and analgesic activity of novel 4-hydroxy-3-(phenylthio)-2H-chromen-2-ones and 4-Hydroxy-3-[imidazol/tetrazolo- 2-yl)thio]-2H-chromen-2-ones
Rajesha,Mahadevan, Kittappa M.,Satyanarayan,Bhojya Naik
, p. 1733 - 1743 (2011/10/08)
A mild and efficient synthesis of new 4-hydroxy-3-(phenylthio)-2H-chromen- 2-ones 4a-k and 4-hydroxy-3-[imidazol/tetrazolo-2-yl)thio]-2H-chromen-2-ones 6a-d is described. The compounds 4a-c were further subjected to oxidation by m-CPBA to obtain 3-(phenylsulfonyl)-4-hydroxy-2H-chromen-2-ones 5a-c. The structures of the resulted new compounds were established by IR, 1H NMR, mass, and elemental analysis. All the synthesized compounds were subjected to antibacterial activity against the Gram positive bacteria Staphylococcus aureus, Bacillus subtilis, and Streptococcus haemolytius and the Gram negative bacteria Salmonella typhi, Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumonia. The analgesic activity was carried out using Swiss albino male mice by abdominal concentration method. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. Copyright Taylor &Francis Group, LLC.
Sulfenylation of heterocyclic 1,3-dicarbonyl compounds
Schnell, Barbara,Kappe, Thomas
, p. 1147 - 1157 (2007/10/03)
Anions of heteroaromatic 1,3-dicarbonyl compounds, such as 4-hydoxy-2-quinolones and 4-hydroxy-coumarins, react in DMF in the presence of potassium carbonate with diaryl disulfides to yield 3-arylsulfenyl derivatives. The arylthiolate anions formed in thi