Kobayashi, Yuki; Obayashi, Riho; Watanabe, Yuki; Miyazaki, Hiroki; Miyata, Issei; Suzuki, Yuta; Yoshida, Yukihiro; Shioiri, Takayuki; Matsugi, Masato published the article 《Unprecedented Asymmetric Epoxidation of Isolated Carbon-Carbon Double Bonds by a Chiral Fluorous Fe(III) Salen Complex: Exploiting Fluorophilic Effect for Catalyst Design》. Keywords: fluorous salen iron chloride complex preparation; vinylbenzene salen iron chloride complex enantioselective epoxidation; phenyl oxirane preparation.They researched the compound: (S)-Propane-1,2-diamine dihydrochloride( cas:19777-66-3 ).Electric Literature of C3H12Cl2N2. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:19777-66-3) here.
The first asym. epoxidation of isolated carbon-carbon double bonds by a chiral salen complex using ubiquitous Fe(III) as a center-metal was described. By simultaneously introducing fluorous tags and tert-Bu groups into the ligand of the salen complex, asym. epoxidation was achieved. The fluorous tags act as both the electron-withdrawing groups, to improve the catalytic activity for oxidation, and the driving force to form a unique asym. stereo environment. Crystallog. anal. of the complex revealed that the catalyst has a distinctive umbrella structure based on intramol. fluorophilic effect. This is the first example of asym. catalytic space construction that exploits fluorous space-interaction of neighboring fluorous tags.
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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider