Mitra, Mainak published the artcileHighly enantioselective epoxidation of olefins by H2O2 catalyzed by a non-heme Fe(II) catalyst of a chiral tetradentate ligand, HPLC of Formula: 4760-35-4, the publication is Dalton Transactions (2019), 48(18), 6123-6131, database is CAplus and MEDLINE.
The chiral tetradentate N4-donor ligand, 1-methyl-2-({(S)-2-[(S)-1-(1-methylbenzimidazol-2-yl Me)pyrrolidin-2-yl]pyrrolidin-1-yl}methyl)benzimidazole (S,S-PDBzL), based on a chiral dipyrrolidine backbone, was synthesized and its corresponding Fe(II) complex was prepared and characterized. The x-ray structure of the complex reveals that the Fe(II) ion is in a distorted octahedral coordination environment with two cis-oriented coordination sites occupied by (labile) triflate anions. The ability of the iron complex to catalyze asym. epoxidation reactions of olefins with H2O2 was studied, using 2-cyclohexen-1-one, 2-cyclopenten-1-one, cis-β-methylstyrene, isophorone, chalcones and tetralones as substrates. Different carboxylic acids were used as additives to enhance yields and enantioselectivities, and 2-ethylhexanoic acid gave the best results. The catalysis results indicate that the Fe(II) complex is capable of effecting comparatively high enantioselectivities (>80%) in the epoxidation reactions.
Dalton Transactions published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C9H9ClN2, HPLC of Formula: 4760-35-4.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem