1026-05-7Relevant articles and documents
Facile synthesis of 2-methylquinolines from anilines on mesoporous N-doped TiO2 under UV and visible light
Selvam,Swaminathan
, p. 500 - 508 (2013)
Nitrogen-doped TiO2 was synthesized by a simple wet method using a nitrogen precursor hydrazine hydrate and nano TiO2. This photocatalyst was characterized by X-ray diffraction, highresolution transmission electron microscopy, diffused reflectance spectra, photoluminescence, and X-ray photoelectron spectroscopy. XPS analysis indicates the incorporation of anionic nitrogen in TiO2 lattice as O-Ti-N linkage. N2 adsorption-desorpion isotherm indicates the mesoporous nature of N-TiO2 with the surface area 130.0 m2/g. Sizes of N-TiO2 particles are found to be in the range of 5-30 nm by HRTEM images. DRS spectra reveal the extended absorption to the visible range. N-TiO2 is found to be more efficient than Ag-TiO2, Au-TiO2, and Pt-TiO2 in quinaldine synthesis under visible light. Copyright Taylor & Francis Group, LLC.
Synthesis and SAR of cis-1-Benzoyl-1,2,3,4-tetrahydroquinoline ligands for control of gene expression in ecdysone responsive systems
Smith, Howard C.,Cavanaugh, Caitlin K.,Friz, Jennifer L.,Thompson, Christine S.,Saggers, Jessica A.,Michelotti, Enrique L.,Garcia, Javier,Tice, Colin M.
, p. 1943 - 1946 (2003)
A library of 35 cis-1-benzoyl-2-methyl-4-(phenylamino)-1,2,3,4-tetrahydroquinolines was prepared. The compounds bore various substitutuents on the benzoyl ring, at the 4-position of the phenylamino ring and at the 6-position of the tetrahydroquinoline rin
Radical cation salts induced domino reaction of anilines with enol ethers: Synthesis of 1,2,3,4-tetrahydroquinoline derivatives
Jia, Xiao Dong,Ren, Yan,Huo, Cong Dde,Wang, Wen Juan,Chen, Xiang Ning,Fu, Qiong,Wang, Xi Cun
, p. 671 - 674 (2011)
A domino reaction of anilines with cyclic and acyclic enol ethers induced by catalytic amounts of TBPA?+ (5 mol%) was investigated and a series of 2,4-disubstituted-1,2,3,4-tetrahydroquinolines were synthesized. Different from cyclic enol ethers, when acyclic enol ethers were used in the reaction, they serve as surrogates of acetaldehyde, producing a series of 2-methyl-4-anilino-1,2,3,4-tetrahydroquinolines. A single electron transfer mechanism was proposed to rationalize the products formation.
Photocatalytic Synthesis of Quinolines via Povarov Reaction under Oxidant-Free Conditions
Chen, Bin,Su, Long-Long,Tung, Chen-Ho,Wang, Wen-Guang,Wei, Xiang-Zhu,Wu, Li-Zhu,Zheng, Yi-Wen
supporting information, (2022/02/14)
We describe here an approach for synthesizing quinolines either from N-alkyl anilines or from anilines and aldehydes. A dual-catalyst system consisting of a photocatalyst and a proton reduction cocatalyst is employed. Without the use of any sacrificial ox
Method for synthesizing 1,2,3,4-tetrahydroquinoline compounds in mode that decarboxylation of amino acid is catalyzed by visible light
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, (2018/05/30)
The invention relates to a method for synthesizing 1,2,3,4-tetrahydroquinoline compounds in the mode that decarboxylation of amino acid is catalyzed by visible light. The method is characterized in that in an air atmosphere, the N-phenyl amino acidic compounds shown in the formula I, an organic photocatalyst DPZ and 4-molecular sieve are dissolved in an organic solvent, stirred and reacted for atleast 5 hours at the temperature of 20-30 DEG C under the irradiation of the visible light, separation and purification are conducted, and then the tetrahydroquinoline compounds shown in the formula II are obtained, wherein in the formula I and the formula II (the formulas are shown in the description), R is representative for any one of hydrogen, halogen, alkyl, phenyl and alkoxy, R1 is representative for any one of hydrogen, methyl, n-propyl and phenyl, alkyl is representative for methyl or ethyl or normal-butyl or benzyl, and aryl is representative for substituted phenyl or 4-tert-butyl phenyl. According to the method, substrates are simple, reaction conditions are mild, the usage amount of the catalyst is low, the yield is high, and no metal participates in a reaction.
Method for synthesizing quinoline compounds in mode that oxidative dehydrogenation of tetrahydroquinoline compounds is synergistically catalyzed by visible light
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Paragraph 0008; 0011; 0012, (2018/05/30)
The invention relates to a method for synthesizing quinoline compounds in the mode that oxidative dehydrogenation of tetrahydroquinoline compounds is synergistically catalyzed by visible light. The method comprises the specific steps that in an air atmosphere, the multi-substituted tetrahydroquinoline compounds shown in the formula I, an organic photocatalyst DPZ and an auxiliary catalyst Cl4-NHPIare dissolved into an organic solvent, stirred and reacted for at least 2 hours at the temperature of 20-30 DEG C under the irradiation of the visible light, separation and purification are conducted, and the quinoline compounds shown in the formula II are obtained, wherein in the formula I and the formula II (the formulas are shown in the description), R is representative for any one of hydrogen, halogen, alkyl, phenyl and alkoxy, R1 is representative for any one of hydrogen, methyl, n-propyl and phenyl, alkyl is representative for methyl or ethyl or normal-butyl or benzyl, and aryl is representative for substituted phenyl. According to the method, reaction conditions are mild, the method is environmentally friendly, the usage amount of the catalyst is low, the product conversion ratio is high, the selectivity is good and no metal participates in a reaction.
Sequential Photoredox Catalysis for Cascade Aerobic Decarboxylative Povarov and Oxidative Dehydrogenation Reactions of N-Aryl α-Amino Acids
Shao, Tianju,Yin, Yanli,Lee, Richmond,Zhao, Xiaowei,Chai, Guobi,Jiang, Zhiyong
supporting information, p. 1754 - 1760 (2018/03/21)
A visible-light-driven sequential photoredox catalysis to allow N-aryl α-amino acids to experience efficient cascade aerobic decarboxylative Povarov and oxidative dehydrogenation (ODH) reactions is described. With a dicyanopyrazine-derived chromophore (DP
COMPOUNDS AND MATRICES FOR USE IN BONE GROWTH AND REPAIR
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Paragraph 0333;0342;0343, (2016/03/05)
Compositions of small molecules, matrices, and isolated cells including methods of preparation, and methods for differentiation, transdifferentiation, and proliferation of animal cells into the osteoblast blast cell lineage were described. Examples of ost
Efficient bromination of polyaniline base to poly(2-bromoaniline)-bromide salt and its application as a recyclable catalyst for the synthesis of 2-methyl-4-anilino-1,2,3,4-tetrahydroquinolines
Rajender, Boddula,Palaniappan, Srinivasan
, p. 94 - 98 (2014/10/15)
Efficient bromination of polyaniline base to poly(2-bromoaniline)-bromide is successfully carried out using bromodimethylsulfonium bromide. Poly(2-bromoaniline)-bromide salt was obtained in a dry amorphous nature, having high conductivity (2.5 S/cm) with
Efficient bromination of polyaniline base to poly(2-bromoaniline)-bromide salt and its application as a recyclable catalyst for the synthesis of 2-methyl-4-anilino-1,2,3,4-tetrahydroquinolines
Rajender, Boddula,Palaniappan, Srinivasan
, p. 94 - 98 (2016/10/25)
Efficient bromination of polyaniline base to poly(2-bromoaniline)-bromide is successfully carried out using bromodimethylsulfonium bromide. Poly(2-bromoaniline)-bromide salt was obtained in a dry amorphous nature, having high conductivity (2.5 S/cm) with