61548-33-2Relevant articles and documents
Heteropoly blue as a reaction-controlled phase-transfer catalyst for the epoxidation of olefins
Mingqiang, Li,Xigao, Jian
, p. 1575 - 1579 (2005)
A new reaction-controlled phase-transfer catalyst system has been designed and synthesized. In this system, heteropoly blue, [C7H 7N(CH3)3]3PMo4O 16, is used for the catalytic epoxidation of olefins with H 2O2 as the oxidant. In this system, the catalyst not only can be recovered, like heterogeneous catalyst, but also acts as a homogeneous catalyst. The main products are epoxide of olefins and H2O; no co-product forms. The system exhibits high conversion and selectivity as well as excellent catalyst stability. 31PNMR spectra, UV-vis spectra, and infrared spectra are used to analyze the reason for the phase transfer of the catalyst, indicating that the change of structure leads to the formation of reaction-controlled phase-transfer catalyst.
Ultraselective epoxidation of butadiene on Cu{111} and the effects of Cs promotion [6]
Cowell, James J.,Santra, Ashok K.,Lambert, Richard M.
, p. 2381 - 2382 (2000)
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Enantioselective Radical-Polar Crossover Reactions of Indanonecarboxamides with Alkenes
Cao, Weidi,Feng, Xiaoming,Liu, Xiaohua,Wu, Wangbin,Xu, Xi,Yu, Han,Zhang, Xiying
supporting information, p. 4846 - 4850 (2020/02/11)
Highly efficient asymmetric intermolecular radical-polar crossover reactions were realized by combining a chiral N,N′-dioxide/NiII complex catalyst with Ag2O under mild reaction conditions. Various terminal alkenes and indanonecarboxamides/esters underwent radical addition/cyclization reactions to afford spiro-iminolactones and spirolactones with good to excellent yields (up to 99 %) and enantioselectivities (up to 97 % ee). Furthermore, a range of different radical-mediated oxidation/elimination or epoxide ring-opening products were obtained under mild reaction conditions. The Lewis acid catalysts exhibited excellent performance and precluded the strong background reaction.
3,4-epoxy-1-butene preparation method
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Paragraph 0032-0035, (2017/03/18)
The present invention relates to a 3,4-epoxy-1-butene preparation method. A purpose of the present invention is mainly to solve the problems of low raw material conversion rate, low product yield and serious waste in the prior art. The technical scheme co