A chiral polymer with alternating conjugated segments and (1R,2R)-1,2-diaminocyclohexane as a unit with C-2 symmetry

A chiral conjugated polymer was prepared via the palladium catalysed coupli ng reaction between 1,4-di-ynyl-2,5-dialkoxybenzene and a bis-5-bromothieny l derivative of (1R,2R)-1,2-diaminocyclohexane as a chiral unit with C-2 sy mmetry and a unit with complexing properties. The resulting chiral polymer of which it's backbone consists of alternating conjugated segments and chir al complexing units, showed intense luminescence properties and was used as a ligand in the rhodium-catalysed hydride transfer reduction. (C) 2001 Els evier Science Ltd. All rights reserved.