64677-34-5Relevant academic research and scientific papers
Electrocatalytic Activation of Donor–Acceptor Cyclopropanes and Cyclobutanes: An Alternative C(sp3)?C(sp3) Cleavage Mode
Brandt, Felix,Jacob, Christoph R.,Jones, Peter G.,Kolb, Simon,Petzold, Martin,Werz, Daniel B.
supporting information, p. 15928 - 15934 (2021/06/21)
We describe the first electrochemical activation of D–A cyclopropanes and D–A cyclobutanes leading after C(sp3)?C(sp3) cleavage to the formation of highly reactive radical cations. This concept is utilized to formally insert molecula
Lewis Acid Catalyzed Nucleophilic Ring Opening and 1,3-Bisfunctionalization of Donor-Acceptor Cyclopropanes with Hydroperoxides: Access to Highly Functionalized Peroxy/(α-Heteroatom Substituted)Peroxy Compounds
Singh, Kuldeep,Bera, Tishyasoumya,Jaiswal, Vandana,Biswas, Subrata,Mondal, Biplab,Das, Dinabandhu,Saha, Jaideep
, p. 710 - 725 (2019/01/24)
The Lewis acid catalyzed ring opening reaction of Donor-Acceptor (D-A) cyclopropanes with alkyl hydroperoxides is reported to furnish various peroxycarbonyls and 1,3-haloperoxygenated compounds in good to excellent yields. This method adds another instanc
Regioselective oxidative ring-opening of cyclopropenyl carboxylates by visible light photoredox catalysis
Ye, Qianwen,Ye, Hongqiang,Cheng, Dongping,Li, Xiaonian,Xu, Xiaoliang
, p. 2546 - 2549 (2018/05/28)
Catalyzed by Ir(dFCF3ppy)2(dtbbpy)PF6, several aroyl methylidenemalonates were synthesized in good to excellent yields via visible light photoredox-catalyzed the oxidative ring-opening of cyclopropenyl carboxylate derivatives. The possible mechanism of oxidative quenching cycle was proposed.
Method for synthesizing benzoyl methylene malonic ester compound
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Paragraph 0057; 0058; 0059; 0060, (2017/07/01)
The invention discloses a method for synthesizing a benzoyl methylene malonic ester compound of a formula II as shown in the description. The method comprises the following steps: by taking a diester cyclopropane compound of a formula I as shown in the description as a raw material, under the action of an iron catalyst, by taking Selectfluor as an oxidant, in the presence of an acetonitrile solvent, performing stirring reaction for 8-16 hours at 70-90 DEG C, and after the reaction is completed, performing aftertreatment on a reaction liquid to obtain the benzoyl methylene malonic ester compound of the formula II as shown in the description. The method disclosed by the invention has the advantages that the raw materials are low in price and easily accessible, the process is simple, the operation is simple and convenient, environmental friendliness is achieved, the yield is high, and the functional group universality is good.
Synthesis method of benzoyl methylene malonate derivatives
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Paragraph 0057; 0058; 0059; 0060, (2017/08/27)
The invention discloses a synthesis method of benzoyl methylene malonate derivatives as shown in a formula II. Diester-based cyclopropane compound shown in the formula I is used as a raw material, under the action of a silver catalyst, Selectfluor is taken as an oxidizing agent, and in an acetonitrile solvent, the reaction materials are stirred at 70-110 DEG C and allowed to react for 8-24 hours, and after the reaction, the reaction solution is subjected to post-treatment to prepare the benzoyl methylene malonate derivatives shown in the formula II. The synthesis method disclosed by the invention has the advantages of cheap and easily available raw materials, simple process, simplicity and convenience in operation, and being environment-friendly, high in yield, good in functional group universality and the like.
A highly regioselective tandem 1,3-dipolar cycloaddition of cyclopropene 1,1-diesters and nitrile oxides: synthesis of highly functionalized isoxazoles
Chen, Shaojin,Ren, Jun,Wang, Zhongwen
experimental part, p. 9146 - 9151 (2010/01/06)
A highly regioselective tandem 1,3-dipolar cycloaddition of cyclopropene 1,1-diesters with nitrile oxides was described. This reaction supplied a new method for synthesis of polyfunctionalized isoxazole derivatives in moderate to excellent yields under mi
Trapping reactions of 1-methoxyfuran endo-peroxides with 4-nitrobenzaldehyde oxime. Regio- and stereoselective synthesis of the first oxime O- ethers
Iesce, M. Rosaria,Cermola, Flavio,Guitto, Antonio,Giordano, Federico
, p. 475 - 478 (2007/10/03)
The synthesis of the title compounds by dye-sensitized photooxygenation of 2-methoxyfurans in the presence of 4-nitrobenzaldehyde oxime is described. The crystal structure determination of a derivative is also reported.
