Asymmetric synthesis of chrysanthemic acid. An application of copper carbenoid reaction
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High-valent tin(IV) porphyrins: Efficient and selective catalysts for cyclopropanation of styrene derivatives with EDA under mild conditions
2013, Journal of Organometallic ChemistryCitation Excerpt :In 1965, Nozaki et al. used copper complexes as catalyst for cyclopropanation of olefins with EDA [11]. Aratani et al. improved this study by using a chiral copper complex [12–15]. Subsequently, a wide variety of catalytic systems has been applied for cyclopropanation of olefins but when metalloporphyrins are used as catalyst, the reaction shows excellent activity and selectivity [16–18].
4.8 C-C Bond Formation (Metal-Carbene Catalyzed)
2012, Comprehensive ChiralityWater enables transimination between hindered ketimines and β-aminoalcohols and selective protection of a vicinal diamine backbone
2010, TetrahedronCitation Excerpt :There are a variety of reactions in which good enantioselectivity has been achieved with transition-metal complexes of chiral aldimine ligands. Aldimine derivatives of simple chiral aminoalcohols and N-alkylamines have been demonstrated to be effective in asymmetric cyclopropanation,1 Michael addition,2 Mannich-type,3 nitroaldol4 desymmetrisation,5 and kinetic resolution6 reactions, to name a few. Transition-metal complexes of salen ligand have shown, among many other applications, high enantioselctivities in oxidation catalysis,7 Diels/Alder cyclisation,8,9 oxidative coupling of binaphthols10 and have been used as chiral phase-transfer catalysts for the alkylation of α-alkyl imino esters.11