5670-23-5Relevant academic research and scientific papers
Dioxazolones as masked ester surrogates in the Pd(ii)-catalyzed direct C-H arylation of 6,5-fused heterocycles
Saxena, Paridhi,Maida, Neha,Kapur, Manmohan
supporting information, p. 11187 - 11190 (2019/09/30)
A simple and effective Pd(ii)-catalyzed regioselective C(2)-H arylation of 6,5-fused heterocycles with dioxazolones as a masked ester surrogate under mild conditions is reported. The significance of the arylation is highlighted by the new reactivity demonstrated in dioxazolones via proximal C-H activation of the cyclic carbonate of the hydroxamic acid functionality under protic conditions.
Preparation method of benzofuran compound
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Paragraph 0106-0109, (2019/04/04)
The invention relates to a preparation method of a benzofuran compound. The preparation method comprises the following steps: putting a furan compound, acetic acid and a Lewis acid catalyst in a reaction vessel, reacting for 0.5-24 h at 80-160 DEG C, and separating and purifying to obtain the benzofuran compound. According to the preparation method provided by the invention, the furan compound isused as a reaction raw material, an acetic acid water solution is used as a solvent, Lewis acid is used as a catalyst, and at a mild reaction temperature (80-160 DEG C), the benzofuran compound is directly obtained through one-step reaction. The preparation method provided by the invention can synthesize the benzofuran compound with a corresponding structure and functional groups based on the structure and functional groups of the furan compound as a raw material, the raw material components are simple , and the process is convenient to operate; wherein the selectivity of the obtained benzofuran is as high as 99% in the process of synthesizing benzofuran by using furan, so that the method has industrial application prospects.
OXADIAZINE COMPOUNDS AND METHODS OF USE THEREOF
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Paragraph 0252, (2016/12/26)
The present disclosure relates to oxadiazine compounds, pharmaceutical compositions comprising an effective amount of an oxadiazine compound and methods for using an oxadiazine compound in the treatment of a neurodegenerative disease, comprising administering to a subject in need thereof an effective amount of an oxadiazine compound.
Zeolite-catalyzed synthesis of 2,3-unsubstituted benzo[b]furans via the intramolecular cyclization of 2-aryloxyacetaldehyde acetals
Sun, Nan,Huang, Peng,Wang, Yifan,Mo, Weimin,Hu, Baoxiang,Shen, Zhenlu,Hu, Xinquan
, p. 4835 - 4841 (2015/07/27)
An efficient and environmentally benign heterogeneous catalytic process for the synthesis of 2,3-unsubstituted benzo[b]furans has been established via the intramolecular cyclization of 2-aryloxyacetaldehyde acetals. By utilizing tin-exchanged H-β zeolite (Sn-β) as catalyst, a wide range of functionalized 2,3-unsubstituted benzo[b]furans could be prepared in good to excellent yields. The Sn-β zeolite catalyst also exhibited excellent shape selectivity on the cyclization of meta-substituted 2-aryloxyacetaldehyde acetals, and 6-substituted isomers were preferably formed up to 97% regio-selectivity. Moreover, Sn-β zeolite could be easily recovered and reused without any noticeable activity loss.
