Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Catalytic Reactions of 3-Phenyl-2-propen-1-ol with Perchloratocarbonylbis (triphenylphosphine) rhodium (I)$^\dag$

  • Published : 1987.08.20
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Abstract

Reaction of Rh $(ClO_4)(CO)(PPh_3)_2$ (1) with trans-$C_6H_5CH = CHCH_2OH$ (2) produces a new cationic rhodium(Ⅰ) complex, $[Rh(trans-C_6H_5CH = CHCHO)(CO)(PPh_3)_2]ClO_4$ (3) where 2 is coordinated through the oxygen atom but not through the olefinic group. At room temperature under nitrogen, complex 1 catalyzes dehydrogenation, hydrogenolysis, and isomerization of 2 to give $trans-C_6H_5CH$ = CHCHO (4), trans-$C_6H_5CH = CHCH_3$ (5) and $C_6H_5CH_2CH_2CHO$ (6), respectively, and oligomerization of 2 whereas under hydrogen, complex 1 catalyzes hydrogenation of 2 to give $C_6H_5CH_2CH_2CH_2OH$ (7) and hydrogenolysis of 2 to 5 which is further hydrogenated to $C_6H_5CH_2CH_2CH_3$ (8). The dehydrogenation and hydrogenolysis of 2 with 1 suggest an interaction between the rhodium and the oxygen atom of 2, whereas the isomerization and hydrogenation of 2 with 1 indicate an interaction between the rhodium and the olefinic system of 2.

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