1075-47-4Relevant academic research and scientific papers
Copper-Catalyzed Enantioselective Hetero-Diels-Alder Reaction of Danishefsky's Diene with Glyoxals
Li, Yanan,Hu, Yanbin,Zhang, Sheng,Sun, Jianan,Li, Lijun,Zha, Zhenggen,Wang, Zhiyong
, p. 2993 - 2999 (2016)
(Chemical Equation Presented) The highly enantioselective hetero-Diels-Alder reaction of Danishefsky's diene with glyoxals was developed by virtue of a readily accessible chiral copper catalyst. This efficient transformation provided a facile and scalable
Reactions of cyclohexyl isocyanide, dialkyl acetylenedicarboxylates and 1-aryl-2-ene-3-acetyl-1,4-diketones: One-pot synthesis of highly functionalized 5-cyclohexylimino-2,5-dihydrofurans
Latifi, Mahsa,Talebdizaeh, Mahdiyeh,Anary-Abbasinejad, Mohammad
, p. 66 - 72 (2018/10/26)
Dihydrofurans are important intermediates in organic synthesis, and are also important starting materials used in syntheses of a number of natural products. A facile synthesis of highly functionalized 5- cyclohexylimino-2,5-dihydrofuran derivatives by the multi-component reaction of cyclohexyl isocyanide, dialkyl acetylenedicarboxylates and 1-aryl-2-ene-3-acetyl-1,4-diketones is described.
A 2 - cyano - 4 - chloro - 5 - (4 - methyl phenyl) imidazole synthesis method
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Paragraph 0035; 0040; 0045, (2017/11/01)
The invention relates to a synthetic method for 2-cyano-4-chloro-5-(4-methylphenyl)imidazole. The synthetic method comprises the following steps: (1) by taking p-methylacetophenone as a raw material, carrying out a halogenating reaction under a light condition to obtain a compound I; (2) dissolving the obtained compound I in a solvent, stirring the mixture to react at a certain temperature, and performing cooling and suction-filtering to obtain a compound II; (3) dissolving the obtained compound II in a solvent and carrying out a reaction with glyoxal and hydroxylamine sulphate at a certain temperature to obtain a compound III; and (4) dissolving the obtained compound III in a solvent, carrying out a reaction with sulfoxide chloride in an ice bath in a manner of raising the temperature to room temperature and keeping the temperature for the reaction, dropwise adding sulfur chloride, and after reaction, washing the product to obtain a compound IV which is 2-cyano-4-chloro-5-(4-methylphenyl)imidazole. The synthetic method is good in atom economy, simple and convenient in process operation and high in product yield and industrial application value.
Metal free one-pot synthesis of α-ketoamides from terminal alkenes
Dutta, Sayan,Kotha, Surya Srinivas,Sekar, Govindasamy
, p. 47265 - 47269 (2015/06/16)
A practical approach towards the synthesis of α-ketoamides from readily available terminal alkenes (styrenes) has been developed. Use of inexpensive I2/2-iodoxybenzoic acid (IBX) in dimethyl sulphoxide (DMSO) as an oxidant under metal free one-pot conditions makes this methodology versatile.
PYRIDOPYRAZINES AS ANTICANCER AGENTS
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Page/Page column 13, (2014/07/22)
The present invention relates to pyridopyrazine derivatives and solvates, hydrates and pharmaceutically acceptable salts thereof, the use of them in the prevention and/or the treatment of cancer diseases, as well as pharmaceutical compositions containing at least one of them as pharmaceutically active agent(s) together with pharmaceutically acceptable carrier, excipient and/or diluents, especially for the prevention and/or treatment of cancer diseases.˙
Iodine-mediated oxidative annulation for one-pot synthesis of pyrazines and quinoxalines using a multipathway coupled domino strategy
Viswanadham, K. K. Durga Rao,Prathap Reddy, Muktapuram,Sathyanarayana, Pochampalli,Ravi, Owk,Kant, Ruchir,Bathula, Surendar Reddy
supporting information, p. 13517 - 13520 (2015/01/09)
An efficient iodine-mediated oxidative annulation of aryl acetylenes-arylethenes-aromatic ketones with 1,2-diamines for the synthesis of pyrazines and regioselective synthesis of quinoxalines is presented. A multipathway coupled domino approach has been developed for the one-pot synthesis of 1,4-diazines with high functional group compatibility.
Design and synthesis of 2-acylbenzothiazoles via in situ cross-trapping strategy from benzothiazoles with aryl ketones
Gao, Qinghe,Wu, Xia,Jia, Fengcheng,Liu, Meicai,Zhu, Yanping,Cai, Qun,Wu, Anxin
, p. 2792 - 2797 (2013/04/24)
An I2/KOH synergistically promoted direct ring-opening aroylation of benzothiazoles with aryl ketones has been discovered. Aryl ketones were seen to act as carbonyl sources to construct 2-acylbenzothiazoles. This reaction could provide an example for the convergent integration of self-labor domino sequences based on an in situ cross-trapping strategy.
A multipathway coupled domino strategy: Metal-free oxidative cyclization for one-pot synthesis of 2-acylbenzothiazoles from multiform substrates
Zhu, Yan-Ping,Jia, Feng-Cheng,Liu, Mei-Cai,Wu, An-Xin
, p. 4414 - 4417 (2012/10/29)
A multipathway coupled domino strategy has been developed for the efficient synthesis of 2-acylbenzothiazoles from multiform substrates arylethenes, arylacetylenes, 2-hydroxy-aromatic ketones, and carbinols via four distinct pathways. Through a logical coupled oxidation/heterocyclization domino process, a variety of 2-acylbenzothiazoles were synthesized free of metal in one pot.
Synthesis of trisubstituted isoxazoles via in situ trapping strategy from α-nitro carbonyl compounds and methyl ketones or terminal aryl alkenes
Yang, Yan,Gao, Meng,Deng, Cong,Zhang, Dong-Xue,Wu, Liu-Ming,Shu, Wen-Ming,Wu, An-Xin
supporting information; experimental part, p. 6257 - 6262 (2012/08/28)
A highly efficient domino method for the synthesis of trisubstituted isoxazoles has been established from α-nitro carbonyl compounds and methyl ketones or terminal aryl alkenes. Simple and readily available starting materials, mild reaction conditions and very simple operation are significant advantages of the reaction.
Selective oxidation of benzylic or allylic hydroxyl group of sec-1,2-diols
Peng, Kun,Chen, Fuxin,She, Xuegong,Yang, Chunhui,Cui, Yuxin,Pan, Xinfu
, p. 1217 - 1220 (2007/10/03)
A mild and efficient method to selectively oxidize chiral sec-1,2-diols has been developed, which demonstrates that 2,3-dichloro-5,6-dicyano-1,4- benzoquinone (DDQ) can selectively oxidize benzylic or allylic hydroxyl group of sec-1,2-diols under ultrasound wave promotion. The configuration of the adjacent chiral center is retained.
