22528-77-4Relevant academic research and scientific papers
Visible-light-promoted oxidative coupling of styrene with cyclic ethers
Kibriya, Golam,Ghosh, Debashis,Hajra, Alakananda
, p. 42 - 46 (2019/11/11)
A new visible-light-promoted oxidative coupling of vinylarenes with cyclic ethers has been developed using rose bengal as photocatalyst and tert-butyl hydrogenperoxide (TBHP) as oxidant under ambient air at room temperature. A library of α-oxyalkylated ketones with broad functionalities has been synthesized in moderate to good yields. A radical mechanism is suggested for the present protocol.
Organocatalytic Enantioselective Cycloetherifications Using a Cooperative Cation-Binding Catalyst
Jadhav, Amol P.,Oh, Jeong-A,Hwang, In-Soo,Yan, Hailong,Song, Choong Eui
supporting information, p. 5319 - 5322 (2018/09/13)
A highly enantioselective cycloetherification strategy for the straightforward synthesis of enantioenriched tetrahydrofurans, tetrahydropyrans, and oxepanes using Song's cation-binding oligoEG catalyst and KF as the base is demonstrated. A wide range of ?
Transition-Metal-Free Oxidative Decarboxylative Cross Coupling of α,β-Unsaturated Carboxylic Acids with Cyclic Ethers under Air Conditions: Mild Synthesis of α-Oxyalkyl Ketones
Ji, Peng-Yi,Liu, Yu-Feng,Xu, Jing-Wen,Luo, Wei-Ping,Liu, Qiang,Guo, Can-Cheng
, p. 2965 - 2971 (2017/03/23)
A novel K2S2O8-promoted decarboxylative cross coupling of α,β-unsaturated carboxylic acids with cyclic ethers was developed under aerobic conditions. The present protocol, which includes C-C and C=O bond formation in one s
Method of decarboxylation oxidative coupling for [alpha], [beta]-unsaturated carboxylic acid and cyclic ether compound
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Paragraph 0184; 0203; 0204; 0205; 0206, (2017/08/27)
The invention discloses a method of decarboxylation oxidative coupling for [alpha], [beta]-unsaturated carboxylic acid and a cyclic ether compound. In the method, under an oxygen-containing atmosphere, the [alpha], [beta]-unsaturated carboxylic acid and t
Method for performing decarboxylated oxidative coupling on cinnamic acid derivatives and cyclic ethers
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Paragraph 0153, (2017/08/27)
The invention discloses a method for performing decarboxylated oxidative coupling on cinnamic acid derivatives and cyclic ethers. The method comprises the step of carrying out a one-pot reaction between the cinnamic acid derivatives and cyclic ethers in a
MnO2-Catalyzed Oxidative Alkylation of Enamides with Ethers via C(sp3)-H/C(sp2)-H Cross-Dehydrogenative Coupling and Hydrolysis Sequence
Hu, Zhiyan,Tang, Yucai,Zhang, Shan,Li, Xiaoqing,Du, Xiaohua,Xu, Xiangsheng
, p. 2557 - 2560 (2015/11/11)
A new MnO2-catalyzed oxidative alkylation of enamides with a C(sp3)-H bond adjacent to an oxygen atom is described. This method achieves a C(sp3)-H/C(sp2)-H cross-dehydrogenative coupling and hydrolysis, thus pr
Gold(I)/(III)-catalyzed synthesis of cyclic ethers; Valency-controlled cyclization modes
Morita, Nobuyoshi,Yasuda, Arisa,Shibata, Motohiro,Ban, Shintaro,Hashimoto, Yoshimitsu,Okamoto, Iwao,Tamura, Osamu
supporting information, p. 2668 - 2671 (2015/06/16)
Strategic use of oxophilic (hard) gold(III) and π-philic (soft) gold(I) catalysts provides access to two types of cyclic ethers from propargylic alcohols. Thus, heating propargylic alcohols with an oxophilic gold(III) catalyst (AuBr3) results i
Oxa-Michael addition promoted by the aqueous sodium carbonate
Guo, Shi-Huan,Xing, Sheng-Zhu,Mao, Shuai,Gao, Ya-Ru,Chen, Wen-Liang,Wang, Yong-Qiang
supporting information, p. 6718 - 6720 (2014/12/11)
An efficient Michael addition of alcohols to activated alkenes promoted by sodium carbonate with water as reaction medium has been developed. The reaction provides a general, economical and environmentally friendly approach for the synthesis of β-alkoxycarbonyl compounds.
Tandem nucleophilic addition/oxa-michael reaction for the synthesis of cis-2,6-disubstituted tetrahydropyrans
Gharpure, Santosh J.,Prasad,Bera, Kalisankar
, p. 3570 - 3574 (2014/06/23)
A Lewis acid catalyzed tandem nucleophilic addition/oxa-Michael reaction was developed for the synthesis of cis-2,6-disubstituted tetrahydropyran (THP) derivatives in good yields with excellent diastereoselectivities. The strategy was successfully used in the construction of THP derivatives with three stereocenters in a highly stereoselective fashion. Copyright
Copper-catalyzed dehydrogenative cross-coupling reaction between unactivated ethers and simple ketones mediated by pyrrolidine
Huang, Xing-Fen,Zhu, Zhi-Qiang,Huang, Zhi-Zhen
, p. 8579 - 8582 (2013/09/12)
A copper-catalyzed dehydrogenative cross-coupling reaction between unactivated ethers and simple ketones mediated by pyrrolidine has been developed. Under the catalysis of CuBr2 and in the presence of pyrrolidine, either tetrahydrofuran 2a or tetrahydropyran 2b can react smoothly with a series of methyl aryl ketones 1a-m to give desired coupling products 3aa-mb using TBHP as an oxidant. The advantages of the dehydrogenative cross-coupling reaction are adoption of unmodified ethers as substrates, good tolerance of many functional groups and use of cheap copper salt as a catalyst. A plausible radical mechanism through enamine attack is proposed.
