Abstract
Selective hydrogenations of different α,β-unsaturated aldehydes into allylic alcohols with immobilized homogeneous catalysts are reported. Different kinds of catalysts were used: supported aqueous-phase catalysts (RuCl 2(TPPTS) 3/SiO 2 and RuH 2(TPPTS) 4/SiO 2) and supported homogeneous catalysts (especially phosphino-iridium catalysts like IrCl 3{(C 6H 5)P[(CH 2) 3SiO 3 2 ] 2·2N[(CH 2) 3SiO 3 2 ] 3·2SiO 2} 3). Some of them are good alternatives to homogeneous catalysts since they are chemoselective, sometimes stereoselective and easy to recover.
Published Version
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