51015-29-3Relevant articles and documents
Intramolecular ionic Diels-Alder reactions of α-acetylenic acetals
Shim, Seung-Bo,Ko, Yoon-Joo,Yoo, Byeong-Wook,Lim, Chang-Keun,Shin, Jung-Hyu
, p. 8154 - 8156 (2004)
The intramolecular ionic Diels-Alder reaction of α-acetylenic acetals as a precursor of the propargyl cation has been investigated in the presence of Lewis acids and in protic acids. The reaction of diene-tethered α-acetylenic acetals (1-2) with formic acid yielded the regioselective intramolecular ionic Diels-Alder reaction products, bicyclodienal (9) and bicyclodienone (11) derivatives, in good yields.
Intramolecular Cycloaddition Reactions of Conjugated Enynes
Danheiser, Rick L.,Gould, Alexandra E.,Pradilla, Roberto Fernandez de la,Helgason, Anna L.
, p. 5514 - 5515 (1994)
The intramolecular cycloaddition of conjugated enynes provides an efficient and general route to aromatic and dihydroaromatic compounds.
MODULATORS OF HSD17B13 AND METHODS OF USE THEREOF
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Paragraph 0520, (2021/01/23)
The disclosure relates to compounds and pharmaceutical compositions capable of modulating the hydroxysteroid 17-beta dehydrogenase (HSD17B) family member proteins including inhibiting the HSD17B member proteins, e.g. HSD17B13. The disclosure further relates to methods of treating liver diseases, disorders, or conditions with the compounds and pharmaceutical compositions disclosed herein, in which the HSD17B family member protein plays a role.
Synthesis of Novel Pterocarpen Analogues via [3?+?2] Coupling-Elimination Cascade of α,α-Dicyanoolefins with Quinone Monoimines
Chen, Hui,Zhao, Sihan,Cheng, Shaobing,Dai, Xingjie,Xu, Xiaoying,Yuan, Weicheng,Zhang, Xiaomei
, p. 1672 - 1683 (2019/04/08)
By employing triethylamine as a catalyst, [3?+?2] coupling-elimination cascade of α,α-dicyanoolefins with quinone monoimines was realized. The reactions afforded various novel pterocarpen analogues with generally moderate yields (up to 75%). In addition, a plausible reaction mechanism was proposed.
Decarboxylative Intramolecular Arene Alkylation Using N-(Acyloxy)phthalimides, an Organic Photocatalyst, and Visible Light
Sherwood, Trevor C.,Xiao, Hai-Yun,Bhaskar, Roshan G.,Simmons, Eric M.,Zaretsky, Serge,Rauch, Martin P.,Knowles, Robert R.,Dhar, T. G. Murali
, p. 8360 - 8379 (2019/09/03)
An intramolecular arene alkylation reaction has been developed using the organic photocatalyst 4CzIPN, visible light, and N-(acyloxy)phthalimides as radical precursors. Reaction conditions were optimized via high-throughput experimentation, and electron-rich and electron-deficient arenes and heteroarenes are viable reaction substrates. This reaction enables access to a diverse set of fused, partially saturated cores which are of high interest in synthetic and medicinal chemistry.
Intramolecular Büchner reaction and oxidative aromatization with SeO2 or O2
Morita, Shunya,Yoshimura, Tomoyuki,Matsuo, Jun-ichi
, p. 729 - 732 (2019/07/31)
Intramolecular Büchner reaction of 1-diazo-5-phenylpentan-2-ones followed by oxidation with SeO2 or O2 in the presence of silica gel regioselectively gave 8-formyl-1-tetralones or one-carbon-lacking 1-tetralones, respectively.
Highly enantioselective [3+2] coupling of cyclic enamides with quinone monoimines promoted by a chiral phosphoric acid
Zhang, Minmin,Yu, Shuowen,Hu, Fangzhi,Liao, Yijun,Liao, Lihua,Xu, Xiaoying,Yuan, Weicheng,Zhang, Xiaomei
supporting information, p. 8757 - 8760 (2016/07/15)
Enantioselective [3+2] coupling of cyclic enamides with quinone monoimines was realised using a chiral phosphoric acid as a catalyst. This transformation allowed for the synthesis of highly enantioenriched polycyclic 2,3-dihydrobenzofurans (up to 99.9% ee). The absolute configuration of one product was determined by an X-ray crystal structural analysis. We also found a possible mechanism for this reaction.
Method for synthesizing tetralone compound
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Paragraph 0023; 0024, (2016/10/07)
The invention belongs to the technical field of organic compound synthesis, provides a method for synthesizing a tetralone compound, and aims at solving the problems that in an exiting tetralone compound synthesizing method, an expensive transition metal catalyst, such as a palladium catalyst, is needed, and a large quantity of oxidizing agent is needed during a reaction. Aryl is used for replacing cyclobutanol to serve as an initiator, under the action of a catalyst, an oxidizing agent and an additive, reacting is carried out for 1-8 h in a solvent at the temperature of 25 DEG C to 100 DEG C, and the tetralone compound is obtained. The method has the advantages that the reaction conditions are relatively moderate, cheap metal copper is adopted as the catalyst, ligand participation is not needed, and operation is easy, convenient and feasible.
A facile and regioselective synthesis of 1-tetralones via silver-catalyzed ring expansion
Yu, Jiajia,Zhao, Huijun,Liang, Shuguang,Bao, Xiaoguang,Zhu, Chen
supporting information, p. 7924 - 7927 (2015/07/27)
A regioselective synthesis of 1-tetralones via silver-catalyzed ring expansion is described. A variety of 1-tetralones are furnished under mild reaction conditions from tertiary cyclobutanols regardless of the electronic properties and steric hindrance of substituents, providing a new and practical method to access diverse 1-tetralone building blocks. Preliminary experimental and DFT studies revealed that a radical-mediated sequence of C-C bond cleavage/C-C bond formation is involved.
COMPOUNDS AND METHODS FOR TREATING HIV INFECTIONS
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Paragraph 0449, (2015/04/21)
The present invention is directed to novel nanomolar and picomolar inhibitors of HIV reverse transcriptase, pharmaceutical compositions therefrom and methods for inhibiting reverse transcriptase and treating HIV infections, especially included drug resistant strains of HIV-1 and HIV-2 and/or secondary disease states and/or conditions which occur as a consequence of HIV infection.
