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The non‐bonding electron pair (n‐pair) of heteroatoms and π‐electrons are both efficient halogen bond (XB) acceptors. In solid and gas phase studies, n‐pairs generally prevail over π‐bonding orbitals as XB acceptors, whereas few studies have been conducted regarding the preference in solution phase. Herein, the Povarov reaction via the C−I⋅⋅⋅N XB interaction and [4+2] cycloaddition via the C−I⋅⋅⋅π XB interaction were evaluated, revealing that the n‐pair was more dominant in the XB catalysis system in solution. The XB donor‐catalyzed Povarov reaction gave diverse indolyl‐tetrahydroquinoline derivatives in good yields. Synthesis of indolyl‐quinolines was also developed. [ABSTRACT FROM AUTHOR]

Chemical equations for the article "Asymmetric Hydrogenation of Isoxazolium Triflates with a Chiral Iridium Catalyst" by R. Ikeda and colleagues, published in the periodical "Chemistry - A European Journal" is presented.

Review: 12 refs. [ABSTRACT FROM AUTHOR]

The Ru-catalyzed hydrogenation of 8-substituted quinolines leads to chiral 5,6,7,8-tetrahydroquinolines as main or sole products. [ABSTRACT FROM AUTHOR]

The asymmetric hydrogenation of pyrimidines proceeds with high enantioselectivity using an iridium catalyst composed of [IrCl(cod)]2, a ferrocene-containing chiral diphosphine ligand (Josiphos), iodine, and Yb(OTf)3. [ABSTRACT FROM AUTHOR]

Besides the iron (IV) corrole catalyst FEC, an iron(III) porphyrin complex shows catalytic activity as well. [ABSTRACT FROM AUTHOR]

Tris(4-methoxy-3,5-dimethylphenyl)phosphane is evaluated as the ligand in hitherto unsuccesful Pd-catalyzed transformations to substituted 1,2,3,4-tetrahydronaphthalenes. [ABSTRACT FROM AUTHOR]

The asymmetric [3 + 2]-cycloaddition of indolyl nitroalkene to iminoesters in the presence of nickel acetate and IAP ligand gives rise to pyrrolidines (III), whilst the copper-catalyzed reaction in the presence of PBD ligand leads to endo-products (VI). [ABSTRACT FROM AUTHOR]

The synthesis of cyclitol derivatives from C2-symmetrical dialdoses is reported. [ABSTRACT FROM AUTHOR]