33617-59-3Relevant academic research and scientific papers
Mild-temperature hydrogenation of carbonyls over Co-ZIF-9 derived Co-ZIF-x nanoparticle catalyst
Hu, Ao,Lu, Xinhuan,Pan, Haijun,Wang, Chenlong,Xia, Qinghua,Xia, Yongde,Yang, Lu,Yue, Fanfan,Zhang, Haifu,Zhou, Dan
, (2020/08/21)
Benzimidazole and metal cobalt salts were employed in the synthesis of Co-ZIF-9 by solvothermal crystallization. Highly active catalysts for selective hydrogenation of carbonyl compounds were developed. The optimal nanocatalyst Co-ZIF-350 manifested remarkable activity and selectivity for the hydrogenation of cyclohexanone under mild conditions. Catalytic conversion of cyclohexanone reached the highest over the catalyst of Co-ZIF-9-pyrolyzed at 350 °C for 2 h, in which the conversion of cyclohexanone was 100 % and the selectivity of cyclohexanol was ＞99 % at 50 °C. A wide scope of ketones/aromatic aldehydes could be selectively reduced to the corresponding alcohols with high yields. Importantly, the nanocatalyst Co-ZIF-350 presented good tolerance of substrates with various functional groups under mild conditions.
Synthesis of acyclic and cyclic phosphonates based on substituted 2-hydroxybenzylic alcohols
Brel, V. K.,Mikulenkova, E. A.,Mironov, V. F.,Tatarinov, D. A.,Terekhova, N. V.
, p. 2147 - 2152 (2020/12/09)
A convenient synthesis of benzylic phosphonates and 2,3-dihydrobenzo[d][1,2]oxaphosphole 2-oxides substituted at the aromatic ring, as well as their precursors, 2-hydroxybenzylic alcohols, from the derivatives of salicylic aldehyde, salicylic acid, and 2-hydroxyacetophenone bearing an additional hydroxy or methoxy group at the para position of the aromatic ring was developed. For the first time, the possibility of selective demethylation of the methoxy group positioned ortho to the methylene phosphonate fragment with retention of the methoxy group at the para position was shown.
Phenyl benzofuran compound as well as preparation method, composition, and medical applications thereof
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Paragraph 0075-0079; 0084; 0086; 0091; 0093, (2019/01/08)
The invention discloses a phenyl benzofuran compound as well as a preparation method, a composition, and medical applications thereof. The structure of the phenyl benzofuran compound is: characterizedin that the formulas are shown in the specificationdescription. The invention discloses a traditional Chinese medicine extracting method of the phenyl benzofuran compound using a moonseed rhizomerhizoma menispermirough powder as a raw material.The invention discloses a chemical synthetic method of phenyl benzofuran compound using 2,4-dihydroxybenzoic acid as starting materials.The invention discloses a composition containing the phenyl benzofuran compound, and an active ingredient of the composition is the phenyl benzofuran compound.The invention also discloses the application of the phenyl benzofuran compound in the preparation of a drug or food or health product preventing or treating a tumor, and the tumor is nasopharyngeal carcinoma.According to the invention, the phenyl benzofuran compound can be prepared by the traditional Chinese medicine extracting method and the chemical synthetic method, and meanwhile, an in vitro tumor cell experiment proves that phenyl benzofuran has an inhibiting effect on both nasopharyngeal carcinoma cells CNE-1 and CNE-2.
SOLID STATE POLYCONDENSATION OF PRECURSORS OF PHENOLIC RESINS
Lamartine, Roger,Perrin, Robert,Vicens, Jacques,Gamet, Daniel,Perrin, Monique,et al.
, p. 219 - 236 (2007/10/02)
Twelve substances derived from phenol or 4-alkylphenol, six of which are precursors of phenolic resins, have been prepared by condensation of the phenol with paraformaldehyde or by further reaction of one of these with the starting phenol.Two cyclic oligomers belonging to the class of calixarenes or cyclophanes have been isolated and characterized.Single crystals of some precursors have been obtained and their crystalline structures have been determined.The thermal decomposition of precursors of phenolic resins has been investigated.Their solid state behaviour and their relative reactivities in acidic and basic conditions have been evaluated.The obtained substances can be considered as important intermediates.They are both sufficiently stable and highly reactive.
