59066-61-4Relevant articles and documents
Chlorotrimethylsilane-mediated synthesis of 2-aryl-1-chloro-1- heteroarylalkenes
Ryabukhin, Sergey V.,Plaskon, Andrey S.,Volochnyuk, Dmitriy M.,Tolmachev, Andrey A.
, p. 3163 - 3170 (2007)
The condensation of (chloromethyl)heterarenes with aromatic aldehydes was investigated, resulting in a simple and flexible general procedure for the synthesis of 2-aryl-1-chloro-1-heteroarylalkenes. The best reaction conditions were found to be heating in N,N-dimethylformamide in the presence of chlorotrimethylsilane as a promoter and water-scavenger. Georg Thieme Verlag Stuttgart.
Pentafluorophenylammonium Triflate: A Mild, Efficient and Reusable Catalyst for the Synthesis of 2-Arylbenzothiazole and 2-Arylbenzothiazoline Derivatives in a Green Chemical Approach
Datta, Arup
, p. 95 - 102 (2021/03/29)
In this work, one pot, simple and environmentally benign effective synthesis of 2-substituted benzothiazole and benzothiazoline derivatives are described in presence of PFPAT (pentafluorophenylammonium triflate) catalyst in water successfully. A series of benzothiazole derivative were synthesized by the reaction between 2-aminothiophenol and various aldehydes in good yields. Recyclability of the catalyst is observed for four times without loss of its activity in aqueous medium.
Deaminative Olefination of Methyl N-Heteroarenes by an Amine Oxidase Inspired Catalyst
Thorve, Pradip Ramdas,Maji, Biplab
supporting information, p. 542 - 547 (2021/01/26)
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.
Method for alkenylation of methyl heterocyclic compound
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Paragraph 0107-0110, (2021/02/10)
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.
