ChemInform Abstract: Additional Data on the Synthesis and Properties of Chiral 1,2-Bis(phosphetano)benzenes.
Abstract
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ChemInform Abstract
The synthesis of several novel chiral bis(phosphetano)benzenes (I) on a previously described pathway is attempted. However, only the benzyl derivative (Ia) can be synthesized, while the highly bulky tert-butyl analogue is not obtained under the reaction conditions. Screening of the catalytic activity of a ruthenium complex, generated from Ru(cod)(2-methylallyl)2, ligand (Ia), and HBr, in the enantioselective hydrogenation of α-keto esters reveals a comparable activity of the novel ligand to previously described isopropyl or cyclohexyl analogues. The complexation behavior of the novel ligand to palladium and ruthenium is studied.
