35782-35-5

Upstream product

• 109-08-0 2-Methylpyrazine 
• 100-52-7 benzaldehyde 
• 32111-21-0 2-iodopyrazine 
• 536-74-3 phenylacetylene 
• 290-37-9 1,4-pyrazine 
• 42599-24-6 E-styryl iodide 
• 100-51-6 benzyl alcohol 
• 100-46-9 benzylamine 
• 91391-83-2 2-phenylethyl-pyrazine 
• 14915-25-4 benzyl alcohol-d 
• 6783-05-7 trans-2-phenylvinylboronic acid 

Relevant academic research and scientific papers

Nickel-catalysed direct α-olefination of alkyl substituted N-heteroarenes with alcohols

Catalytic α-olefination of alkylheteroarenes with primary alcohols via dehydrogenative coupling is presented. A simple nickel catalyst system stabilised by readily available nitrogen ligands enables a series of interesting E-configured vinylarenes (confirmed by X-ray crystal-structure analysis) to be synthesised in good to excellent yields with olefin/alkane selectivity of >20:1. Hydrogen and water are generated as byproducts and quantitative determination of H2 was performed.

Energetics of Organic Solid-State Reactions: Electronic Structure and Photoreaction Mechanism of the 2,5-Distyrylpyrazine Oligomer Molecular Crystal

An investigation of the 2,5-distyrylpyrazine (DSP) oligomer crystal electronic structure is presented in order to more completely characterize the oligomer photoreaction leading to the formation of the crystal of the macromolecule.The electronic transitio

Ru(II)–NNO pincer-type complexes catalysed E-olefination of alkyl-substituted quinolines/pyrazines utilizing primary alcohols

An efficient and selective E-olefination of alkyl-substituted quinolines and pyrazines through acceptorless dehydrogenative coupling of alcohols catalysed by Ru(II)–N^N^O pincer-type complexes encompassing carbonyl and triphenylarsines as co-ligands is de

Deaminative Olefination of Methyl N-Heteroarenes by an Amine Oxidase Inspired Catalyst

We explored the bioinspired o-quinone cofactor catalyzed aerobic primary amine dehydrogenation for a cascade olefination reaction with nine different methyl N-heteroarenes, including pyrimidines, pyrazines, pyridines, quinolines, quinoxolines, benzimidazoles, benzoxazoles, benzthiazoles, and triazines. An o-quinone catalyst phd (1,10-phenanthroline-5,6-dione) combined with a Br?nsted acid catalyzed the reaction. N-Heteroaryl stilbenoids were synthesized in high yields and (E)-selectivities under mild conditions using oxygen (1 atm) as the sole oxidant without needing transition-metal salt, ligand, stoichiometric base, or oxidant.

Preparation method of alkyl/alkenyl substituted nitrogen-containing heterocyclic compound

The invention belongs to the technical field of organic synthesis, and particularly discloses a preparation method of an alkyl/alkenyl substituted nitrogen-containing heterocyclic compound, which comprises the following steps: (1) adding a 2-methyl nitrogen-containing heterocyclic compound, primary alcohol, alkali and an additive into an organic solvent, performing stirring reaction for 24 hours, and then cooling the product to room temperature; and (2) concentrating, separating and purifying the reaction liquid obtained in the step (1). The simple and effective method for preparing the alkyl/alkenyl substituted nitrogen-containing heterocyclic compound under the metal-free and ligand-free conditions is realized, the 2-methyl nitrogen-containing heterocyclic compound and the primary alcohol which are economical and easy to obtain are used as raw materials, and the alkyl/alkenyl substituted nitrogen-containing heterocyclic compound is prepared under the synergistic promotion of alkali and additives; and methyl alkylation and alkenylation reaction are carried out to generate the corresponding alkyl/alkenyl substituted nitrogen-containing heterocyclic compound. The product has high application value and can be used in the fields of spices, medicines, materials, organic synthesis and the like. The method is wide in application range, simple in process, green, simple, high in yield and suitable for popularization and application.

Metal-Free Synthesis of Alkenylazaarenes and 2-Aminoquinolines through Base-Mediated Aerobic Oxidative Dehydrogenation of Benzyl Alcohols

A metal-free, base-mediated, and atom-efficient oxidative dehydrogenative coupling of substituted phenylmethanols (benzyl alcohols) with methyl azaarenes or phenylacetonitriles to afford substituted alkenylazaarenes or 2-aminoquinolines, respectively is described. CsOH.H2O was discovered to be the base of choice for obtaining optimal yields of the title compounds, although the reaction could proceed with KOH as well. The protocol that works efficiently in the presence of air is amenable over broad range of substrates.

Method for alkenylation of methyl heterocyclic compound

The invention discloses a method for alkenylation of methyl heterocyclic compound, which is a green method for synthesizing an alkenyl heterocyclic compound by carrying out alkenylation reaction on methyl under the condition that the methyl heterocyclic compound and alcohol do not need to participate in a transition metal catalyst. According to the method, alcohol which is cheap, easy to obtain, wide in source, stable and low in toxicity is used as an alkenylation reagent, no transition metal catalyst or ligand is needed, air can be directly used as a convenient, mild and efficient oxidizing agent under the action of common water-soluble inorganic base, and the method is suitable for industrial production. The alkenyl heterocyclic compound is directly synthesized by carrying out a Cenylation reaction with a methyl heterocyclic compound through processes such as oxidative condensation and the like. The method has the advantages of simple reaction conditions, no need of inert gas protection, low requirements on equipment, easiness in operation, water as a byproduct, easiness in removal of water-soluble inorganic base, no metal residue in the product, easiness in purification, suitability for heterocyclic systems such as quinoline, quinoxaline, pyridine, benzothiazole and the like, and wide application range, thereby having certain research significance and potential application prospect.

MnO2 mediated sequential oxidation/olefination of alkyl-substituted heteroarenes with alcohols

A practical and efficient ligand-free MnO2 mediated sequential oxidation and olefination has been developed for the facile synthesis of a broad range of unsaturated N-heteroazaarenes from simple alkyl-substituted heteroarenes and alcohols. The procedure tolerates a series of functional groups, such as methoxyl, chloro, bromo, iodo, vinyl, phenolic and hetero groups, providing the olefination products in moderate to good yields.The protocol could be conducted at mild conditions and used environmentally friendly air as the clear oxidant.

Aryl-Nickel-Catalyzed Benzylic Dehydrogenation of Electron-Deficient Heteroarenes

This manuscript describes the first practical benzylic dehydrogenation of electron-deficient heteroarenes, including pyridines, pyrazines, pyrimidines, pyridazines, and triazines. This transformation allows for the efficient benzylic oxidation of heteroarenes to afford heterocyclic styrenes by the action of nickel catalysis paired with an unconventional bromothiophene oxidant.

Iron/TEMPO-catalyzed direct aerobic oxidative coupling of methyl-mubstituted N-heteroazaarenes with alcohols

A novel direct oxidative coupling of methyl-substituted N-heteroazaarenes with alcohols has been developed to construct olefins under mild condition. The reaction is catalyzed by Fe(NO3)3·9H2O/TEMPO with oxygen as terminal oxidant. A variety of E-disubstituted olefins bearing diverse functional groups could be obtained selectively in moderate to excellent yields. The reaction is environmentally friendly and ligand-free.