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Chiral Ti salalen complexes catalyze the asymmetric epoxidation of terminal non-conjugated olefins with hydrogen peroxide. Modular ligands based on cis-1,2-diaminocyclohexane (cis-DACH) were developed, giving high yields and enantiomeric excesses (ee, up to 96%) at catalyst loadings as low as 0.1-0.5mol%, and even under solvent-free conditions. [ABSTRACT FROM AUTHOR]

Help for the neglected: Terminal, non‐conjugated olefins, such as 1‐octene, are difficult to epoxidize asymmetrically. Ti salalen complexes based on cis‐1,2‐diaminocyclohexane catalyze this demanding reaction giving high yields and enantioselectivities (up to 95 % ee), with H2O2 as the oxidant. The X‐ray structures of the μ‐oxo and peroxo complexes shed light on the coordination behavior of this novel class of ligands. [ABSTRACT FROM AUTHOR]

The article presents chemical equations related to the article "Titanium cis-1,2-Diaminocyclohexane (cis-DACH) Salalen Catalysts for the Asymmetric Epoxidation of Terminal Non-conjugated Olefins with Hydrogen Peroxide" by Q. Wang and others, published in the "Chemistry: A European Journal" in 2015.

Help for the neglected: Terminal, non‐conjugated olefins, such as 1‐octene, are difficult to epoxidize asymmetrically. Ti salalen complexes based on cis‐1,2‐diaminocyclohexane catalyze this demanding reaction giving high yields and enantioselectivities (up to 95 % ee), with H2O2 as the oxidant. The X‐ray structures of the μ‐oxo and peroxo complexes shed light on the coordination behavior of this novel class of ligands. [ABSTRACT FROM AUTHOR]

This describes the first synthesis of various salalen ligands based on cis-diaminocyclohexane, the characterization of their Ti complexes, and their application in Ti-catalyzed asymmetric epoxidations. [ABSTRACT FROM AUTHOR]