76061-97-7

Upstream product

• 4173-66-4 3-[(4-methylphenyl)amino]-1-phenyl-1-propanone 
• 106-49-0 p-toluidine 
• 1198272-70-6 4-methyl-N-(prop-2-yn-1-yl)-N-(p-tolyl)benzenesulfonamide 
• 1220993-62-3 4-methyl-N-(3-phenylprop-2-yn-1-yl)-N-(p-tolyl)benzenesulfonamide 
• 599-86-0 4-methyl-N-(4-methylphenyl)benzenesulfonamide 
• 104-55-2 3-phenyl-propenal 
• 2579-22-8 Phenylpropargyl aldehyde 
• 60-12-8 2-phenylethanol 
• 32328-79-3 4-methyl-N-methyleneaniline 
• 91-62-3 6-methylquinoline 
• 98-80-6 phenylboronic acid 
• 76061-95-5 4-Phenyl-6-methyl-1,2,3,4-tetrahydroquinoline 
• 127598-83-8 4-methyl-N-[(2E)-3-phenylprop-2-en-1-yl]aniline 
• 14371-10-9 (E)-3-phenylpropenal 

Downstream Products

• 76062-02-7 2-Amino-1-(6-methyl-4-phenyl-3,4-dihydro-2H-quinolin-1-yl)-ethanone 
• 76061-84-2 N-[2-(6-Methyl-4-phenyl-3,4-dihydro-2H-quinolin-1-yl)-2-oxo-ethyl]-guanidine; hydrochloride 
• 76061-91-1 2-Chloro-1-(6-methyl-4-phenyl-3,4-dihydro-2H-quinolin-1-yl)-ethanone 

Relevant academic research and scientific papers

Copper-mediated formal [5+1] annulation of 2-vinylanilines and glyoxylic acid: A facile approach for the synthesis of 4-arylated quinolines

A copper-mediated formal [5 + 1] oxidative annulation of 2-vinylanilines and glyoxylic acid to 4-arylated quinolines was developed. A series of 4-arylated quinoline derivatives were obtained in good to excellent yields. This protocol could be carried out efficiently on gram scale. The transformation probably underwent nucleophilic addition/6π electrocyclization/oxidative aromatization and the elimination of CO2 cascade processes.

Lewis acid catalyzed reactivity switch: Pseudo three-component annulation of nitrosoarenes and (epoxy)styrenes

A Lewis acid catalyzed annulation reaction via arene functionalization of nitrosoarenes and C-C cleavage of (epoxy)styrene to provide arylquinolines is reported. The Lewis acid catalyst altered the annulation pattern providing arylquinolines instead of oxazolidines. The reaction with styrene resulted in a mixture of 2,4-diarylquinoline and 4-Arylquinoline, while only 3-Arylquinoline was formed from the reaction of epoxystyrene. This journal is

DMSO/t-BuONa/O2-Mediated Aerobic Dehydrogenation of Saturated N-Heterocycles

Aromatic N-heterocycles such as quinolines, isoquinolines, and indolines are synthesized via sodium tert-butoxide-promoted oxidative dehydrogenation of the saturated heterocycles in DMSO solution. This reaction proceeds under mild reaction conditions and has a good functional group tolerance. Mechanistic studies suggest a radical pathway involving hydrogen abstraction of dimsyl radicals from the N-H bond or α-C-H of the substrates and subsequent oxidation of the nitrogen or α-aminoalkyl radicals.

Method for synthesizing substituted quinoline derivative 4- through palladium catalysis (by machine translation)

The invention belongs to the technical field of 4 - synthetic chemistry, and particularly. relates to a method for synthesizing a substituted quinoline derivative with palladium through palladium catalysis, Cs. 2 CO3 The method disclosed by, the 60-80 °C invention is 5-8 simple, and green, in 4 - synthetic process,has excellent selectivity and high yield, and has a wide substrate range, and the method has a wide, application value in the fields of pharmaceutical chemistry, biochemistry and the like. (by machine translation)

CONVERSION OF TETRAHYDROQUINOLINE DERIVATIVES TO QUINOLINE USING AZOCOMPOUND

The present invention relates to a method of converting tetrahydroquinoline derivatives into quinoline using an azo compound and, more specifically, to a conversion method which is performed in a deuterium chloroform (CDCl_3) or chloroform (CHCl_3) solution including dialkyl azodicarboxylate, which is a method of producing quinoline through a dehydrogenation reaction of 1,2,3,4-tetrahydroquinoline. According to the present invention, a dehydrogenation reaction rate is dependent on the electronic and steric properties of used dialkyl azodicarboxylate; and chloroform shows better results than other substances in solvents screened with diethyl azodicarboxylate. Various types of 1,2,3,4-tetrahydroquinoline undergo the dehydration reaction of the present invention to produce the corresponding quinoline in a yield of at least 90%; and diethyl hydrazo dicarboxylate, which is a reduced form of diethyl azodicarboxylate, is readily separated and recyclable.COPYRIGHT KIPO 2020

Microwave-Assisted Metal-Free Rapid Synthesis of C4-Arylated Quinolines via Povarov Type Multicomponent Reaction

A rapid microwave assisted, (±) camphor-10-sulfonic acid (CSA) promoted, Povarov type multicomponent synthesis of 4-arylated quinolines from anilines, alkynes, and paraformaldehyde is described. This reaction proceeds through [4+2] cycloaddition of imine (formed in situ from aniline and paraformaldehyde) and alkynes in the presence of CSA, without any metal catalyst. Mechanistic study revealed that CSA inhibit the synthesis of Troger's base and assist the cycloaddition of imines with alkynes by activating the imine.

Chemoselective Hydroalumination of 1-Aza-but-1-en-3-ynes (C-Iminoalkynes): Formation of Propargylamines by Imine Reduction and of 5-Aluminazoles and 1-Aza-butadienes by Anti-Michael Attack

Hydroalumination of 1-aza-but-1-en-ynes 1 provides facile access to propargylamines 4 by reduction of the C=N bonds or alternatively to 1-aza-buta-1,3-dienes 6 by reduction of the triple bond. The chemoselectivity depends not only on the steric properties of both the hydroalumination agent (di-iso-butylaluminum (DIBAL-H, iBu2AlH) versus di-tert-butylaluminum hydride (tBu2AlH)) and the substrates but also on the reaction temperatures. In several cases, initial aluminum species of 5-aluminazole type 5 could be isolated and characterized by X-ray diffraction, indicating an "anti-Michael" addition of the hydride to the triple bond. Aqueous workup of those species led to 1-azabutadiene derivatives 6. High-level DFT calculations indicate that the observed chemoselectivity is only compatible with a dimeric nature of the hydroaluminating agent. Using such a dimer, the imine reduction corresponds to the kinetically controlled pathway, whereas the triple bond reduction leads to the thermodynamically much more stable 5-aluminazoles, 5.

Direct Synthesis of Quinolines via Co(III)-Catalyzed and DMSO-Involved C-H Activation/Cyclization of Anilines with Alkynes

A unique Co(III)-catalyzed and DMSO-involved C-H activation/cyclization of simple, cheap, and easily available anilines with alkynes for direct and highly efficient synthesis of privileged quinolines with exclusive regioselectivity and broad substrate/functional group tolerance and in good to excellent yields, where DMSO was employed as both the solvent and the C1 building block of quinoline products, is reported. Mechanistic experiments revealed that the versatile reaction might employ the 2-vinylbenzenamine species as the active intermediate.

Transition-Metal-Free Approach for the Synthesis of 4-Aryl-quinolines from Alkynes and Anilines

An efficient and transition-metal-free approach for the synthesis of 4-arylquinolines from readily available anilines and alkynes in the presence of K2S2O8 and DMSO has been developed. A variety of alkynes and anilines having a diverse range of substitution patterns can undergo the one-pot cascade process successfully. Effectively, this method uses DMSO as one carbon source, thus providing a highly atom-economical and environmentally benign approach for the synthesis of 4-arylquinolines.

Direct Assembly of 4-Substituted Quinolines with Vinyl Azides as a Dual Synthon via C=C and C-N Bond Cleavage

An unprecedented Zn-promoted selective cleavage of vinyl azides for the synthesis of 4-substituted quinolines is developed. In this conversion, vinyl azides function as a dual synthon via C=C and C-N bond cleavage with two C=C bonds and one C=N bond formation in a one-step manner. The reaction is appreciated for its readily accessible substrates, high step economy, mild conditions, and use of air as the sole oxidant.