1577232-58-6Relevant articles and documents
Epoxyanthracene Derivatives and Dicarbonylation on Benzene Ring via Hexadehydro-Diels-Alder (HDDA) Derived Benzynes with Oxazoles
Yang, Feihu,Zheng, Xiaojie,Lei, Yu,Hu, Qiong,Zhu, Wenjing,Hu, Yimin
, p. 1125 - 1133 (2021/11/22)
A capture reaction of hexadehydro-Diels-Alder (HDDA) derived benzyne with various substituted oxazoles is reported. With methyl, hydrogen, or phenyl as the substituent at 2-position of oxazole, tetraynes afforded epoxyanthracene derivatives or underwent dicarbonylation on benzene ring. The reaction does not require any catalyst or additive. The mechanism behind the reaction was investigated. The obtained polycyclic product structure has potential application value in optoelectronic materials. The availability of dicarbonylated arene implies the uniqueness of HDDA benzyne reaction compared with traditional benzyne.
Fully Substituted Conjugate Benzofuran Core: Multiyne Cascade Coupling and Oxidation of Cyclopropenone
Yao, Liangliang,Hu, Qiong,Bao, Li,Zhu, Wenjing,Hu, Yimin
, p. 4971 - 4975 (2021/06/30)
An unprecedented C═C double bond cleavage of cyclopropenone and dioxygen activation by multiyne cascade coupling has been developed. This chemistry provides a novel, simple, and efficient approach to synthesize fully substituted conjugate benzofuran derivatives from simple substrates under mild conditions. The density functional theory (DFT) calculations reveal that the unique homolytic cleavages of cyclopropenone and molecular oxygen are crucial to the success of this reaction.
Synthesis method of benzoxazolidine derivative
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Paragraph 0040; 0043; 0046, (2021/07/01)
The invention relates to a synthesis method of a benzoxazolidine derivative, the tetrayne compound and the 5, 5-dimethyl-1-pyrroline-N-oxide are subjected to a heating condensation reflux reaction, the reaction conditions are mild, and the synthesis method is simple. Compared with the prior art, the invention provides a brand-new synthesis method of the benzoxazolidine derivative, and a series of new benzoxazolidine derivatives are generated. The synthesized benzoxazolidine derivative has the advantages of high atom economy, more complex and diverse structure and certain application prospect.
Synthesis method of ferrocene derivative luminescent material
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Paragraph 0038; 0045-0046; 0050, (2021/09/08)
The invention provides a synthesis method of a ferrocene derivative luminescent material. The synthesis method is characterized by heating cyclohexenyl ferrocene and a precursor compound in anhydrous toluene to react. According to the reaction, a benzyne intermediate with extremely high activity is used as an induction reaction, so that the reaction of the ferrocene derivative and alkyne under the condition of no additional metal catalyst is realized, the inherent property that conventional ferrocene is not subjected to hydrogenation and is not subjected to Diels-Alder reaction as a diene is also overcome, a huge breakthrough is brought to synthesis of the ferrocene derivative, and a brand new way is provided for developing the ferrocene derivative luminescent material.
Access to Benzoxazepines and Fully Substituted Indoles via HDDA Coupling
Zheng, Xiaojie,Liu, Baohua,Yang, Feihu,Hu, Qiong,Yao, Liangliang,Hu, Yimin
, p. 956 - 959 (2020/02/15)
The HDDA-derived benzyne intermediate was captured by oxazolines based on the addition reaction of benzyne to the Ca?N double bond. Benzoxazepine derivatives, fused benzoxazepine derivatives, and fully substituted indoles are synthesized in one step. The reaction does not require any catalyst or additives. Possible reaction mechanisms are presented.
Phenanthrenes/dihydrophenanthrenes: The selectivity controlled by different benzynes and allenes
Yao, Liangliang,Fang, Bo,Hu, Qiong,Lei, Yu,Bao, Li,Hu, Yimin
, p. 15185 - 15188 (2020/12/21)
A method for the intermolecular annulation of benzynes with allenes is disclosed. This protocol utilized allenes as an unconventional diene component for the selective synthesis of phenanthrenes and dihydrophenanthrenes under the control of different benzyne precursors, featuring high atom-economy and good functional group compatibility. Density functional theory (DFT) calculations reveal that different migratory routes of the aromatic C-H bond are crucial for the observed selectivity. This journal is
Polysubstituted dibenzoylbenzene derivative and synthesis method thereof
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Paragraph 0053; 0058, (2020/02/19)
The invention provides a polysubstituted dibenzoylbenzene derivative and a synthesis method thereof. The synthesis method comprises the following steps: tetraacetylene and 2,4-diphenyl oxazole are subjected to a DA reaction in methylbenzene under a heating condition, and the system is naturally cooled to room temperature in order to stop the reaction; and the product is purified and separated to obtain the polysubstituted dibenzoylbenzene derivative. Compared with existing polysubstituted dibenzoylbenzene, the polysubstituted dibenzoylbenzene derivative belongs to a series of novel polysubstituted dibenzoylbenzene derivatives. The prepared polysubstituted dibenzoylbenzene has a more complex and diverse structure than common polysubstituted dibenzoylbenzene. The polysubstituted dibenzoylbenzene derivative can be widely applied to the pharmaceutical industry, and the preparation method has the advantages of simplicity, high efficiency and short reaction time.
A isoquinoline [...] derivative and its preparation method
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Paragraph 0036; 0040; 0045, (2019/06/30)
The present invention provides a kind of isoquinoline [...] derivative and its preparation method, the four-alkyne apperception compound in toluene in the reaction with the different kuikui tong, get the isoquinoline [...] derivatives. Compared with the prior art, the present invention provides a new isoquinoline indenone preparation method, generating a series of new isoquinoline [...] derivatives. Synthesis of isoquinoline [...] derivative has high atom economy, the structure is more complex, has a certain application prospect.
A biphenyl derivative and process for its preparation method (by machine translation)
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Paragraph 0045; 0050, (2019/10/04)
The invention discloses a biphenyl derivative and process for its preparation method. In order to different multiple alkyne substrate through the cascade reaction framed biphenyl vinyl compound, the reaction overcomes the lengthy reaction route in the past, the substrate and the harsh reaction conditions, substituted functional group extends the limited and the like, the reaction not only substrate is simple to synthesize, reagent is inexpensive, and has high atom economy, compactly and efficiently to obtain the target molecule, to the biphenyl vinyl derivatives in organic photoelectric material in the neighborhood of the application provides a completely new way. (by machine translation)
Polysubstituted acrylate derivatives and preparation method thereof
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Paragraph 0046, (2018/05/16)
The invention provides polysubstituted acrylate derivatives and a preparation method thereof. Compared with existing acrylate derivatives, a series of novel acrylate derivatives are provided. Comparedwith common acrylate derivatives, the prepared acrylate derivatives have multiple rings and more complex and diversified structures. The substances can be widely applied to the medicine industry, andthe provided preparation method is convenient, efficient, short in reaction time and high in efficiency.