1215023-91-8Relevant academic research and scientific papers
Asymmetric epoxidation of olefins with hydrogen peroxide by an in situ-formed manganese complex
Dai, Wen,Shang, Sensen,Chen, Bo,Li, Guosong,Wang, Lianyue,Ren, Lanhui,Gao, Shuang
, p. 6688 - 6694 (2014)
Asymmetric epoxidation of a variety of cis, trans, terminal, and trisubstituted olefins in excellent yields (up to 94%) and enantioselectivities (>99% ee) by an in situ-formed manganese complex using H2O 2 has been developed. A relationship between the hydrophobicity of the catalyst imposed by ligand and the catalytic activity has been observed. The influence of the amount and identity of the acid additive was examined, and improved enantioselectivities were achieved through the use of a catalytic amount of a carboxylic acid additive.
A process for the asymmetric epoxidation of olefins
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Paragraph 0026-0029; 0034-0036, (2017/02/09)
The invention provides an method for asymmetrically catalytically epoxidizing non-functionalized alkenes. A chiral complex formed by a tetra-dentate nitrogen organic ligand and a metal manganese manganese compound formation is employed as a catalyst, and
Asymmetric epoxidation of alkenes catalyzed by a porphyrin-inspired manganese complex
Dai, Wen,Li, Jun,Li, Guosong,Yang, Hua,Wang, Lianyue,Gao, Shuang
supporting information, p. 4138 - 4141 (2013/09/12)
A novel strategy for catalytic asymmetric epoxidation of a wide variety of olefins by a porphyrin-inspired chiral manganese complex using H 2O2 as a terminal oxidant in excellent yield with up to greater than 99% ee has been successfully developed.
Asymmetric counteranion-directed transition-metal catalysis: Enantioselective epoxidation of alkenes with Manganese(III) salen phosphate complexes
Liao, Saihu,List, Benjamin
supporting information; experimental part, p. 628 - 631 (2010/04/06)
(Figure Presented) Figure Presentation Paired up: A highly active and enantioselective ion-pair epoxidation catalyst, consisting of an achiral Mn |||-salen complex and a chiral phosphate counteranion, mediates the epoxidization of a wide range of alkenes with high yields and enantioselectivities (see scheme). The unique role of the counteranion is to stabilize an enantiomorphic conformation of the cationic Mn catalyst.
