6-(4,4,4-trifluoro-3-hydroxybut-2-enoyl)-2H-benzo[b][1,4]oxazin-3(4H)-one 、 4-正丙基苯基肼盐酸盐 以to give the title compound as a beige solid (257 mg, 78%)的产率得到6-(1-(4-propylphenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)-2H-benzo[b][1,4]oxazin-3(4H)-one
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Fused Heterocyclic Compounds and Their Use as Mineralocorticoid Receptor Ligands
Continuous Flow Process For the Synthesis of Phenylhydrazine Salts and Substituted Phenylhydrazine Salts
申请人:SHANGHAI HYBRID-CHEM TECHNOLOGIES
公开号:US20190152896A1
公开(公告)日:2019-05-23
The present invention provided a continuous flow process for the synthesis of phenylhydrazine salts and substituted phenylhydrazine salts. Diazotization, reduction, acidic hydrolysis and salifying with acids are innovatively integrated together. Using acidic liquids of aniline or substituted aniline, diazotization reagents, reductants and acids as raw materials, phenylhydrazine derivative salts is obtained through the synthesis process, which is a three-step continuous tandem reaction including diazotization, reduction, acidic hydrolysis and salifying. The described synthesis process is a kind of integrated solutions, which is carried out in an integrated reactor. The feed inlets of the integrated reactor are continuously filled with raw materials. In the integrated reactor, diazotization, reduction, acidic hydrolysis and salifying are carried out continuously and orderly, and phenylhydrazine salts or substituted phenylhydrazine salts is obtained in the outlet of the integrated reactor without interruption. The total reaction time is no more than 20 min.
of rat brain homogenate and on arachidonate-induced TXA2-dependent aggregation of rabbit platelets. The anti-platelet and anti-peroxidative activities were related to the lipophilicity of the 5-substituent. The 5-hexyloxy derivative (13) showed about 35-fold higher inhibitory activity on TXA2 synthesis than that of ozagrel and about 100-fold higher activity on lipid peroxidation than that of alpha-tocopherol
Cu-catalyzed hydroxycyclopropanol ring-opening cyclization to tetrahydrofurans and tetrahydropyrans: short total syntheses of hyperiones
作者:Weida Liang、Xinpei Cai、Mingji Dai
DOI:10.1039/d0sc05556e
日期:——
broad substrate scope, scalability, and good functional-group tolerability. It enabled us to complete the shortest enantioselective syntheses of hyperiones A and B (3 and 4 steps, respectively), which is significantly shorter than the previously reported two total syntheses (≥10 steps).
Efficient Synthesis of β-CF<sub>3</sub>/SCF<sub>3</sub>-Substituted Carbonyls via Copper-Catalyzed Electrophilic Ring-Opening Cross-Coupling of Cyclopropanols
作者:Yong Li、Zhishi Ye、Tabitha M. Bellman、Teng Chi、Mingji Dai
DOI:10.1021/acs.orglett.5b00782
日期:2015.5.1
The first copper-catalyzed ring-opening electrophilic trifluoromethylation and trifluoromethylthiolation of cyclopropanols to form Csp3–CF3 and Csp3–SCF3 bonds have been realized. These transformations are efficient for the synthesis of β-CF3- and β-SCF3-substituted carbonyl compounds that are otherwise challenging to access. The reaction conditions are mild and tolerate a wide range of functional
Copper-Catalyzed Cyclopropanol Ring Opening C<sub>sp<sup>3</sup></sub>–C<sub>sp<sup>3</sup></sub> Cross-Couplings with (Fluoro)Alkyl Halides
作者:Zhishi Ye、Kristen E. Gettys、Xingyu Shen、Mingji Dai
DOI:10.1021/acs.orglett.5b03096
日期:2015.12.18
copper-catalyzed cyclopropanol ring opening cross-coupling reactions with difluoroalkyl bromides, perfluoroalkyl iodides, monofluoroalkyl bromides, and 2-bromo-2-alkylesters to synthesize various β-(fluoro)alkylated ketones are reported. The reactions feature mild conditions and excellent functional group compatibility and can be scaled up to gram scale. Preliminary mechanistic studies suggest the involvement