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ChemicalBook CAS DataBase List 4-Phenyl-2-butanol
2344-70-9

4-Phenyl-2-butanol synthesis

9synthesis methods
The optically inactive product can be prepared by hydrogenation of benzylidene acetone in alcohol solution; under pressure in the presence of platinum oxide, palladium oxide or ferrous sulfate; by reduction with magnesium in methanol.
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Yield:2344-70-9 99%

Reaction Conditions:

(HN(iPr2PC2H4)2)IrH3 in isopropyl alcohol at 25; for 1 - 2 h;Conversion of starting material;

Steps:

5.1 Example 5.1 Transfer hydrogenation of benzylidene acetone using IrH3 ((IPR2PC2H4) 2NH) as catalyst
A weighed amount of IRH3 ((IPR2PC2H4) 2NH) is added to a solution of benzylidene acetone in 2-propanol and the mixture stirred at the required temperature. The reaction progress is monitored using NMR. After attainment of an equilibrium conversion, the solvent is removed by evaporation under reduced pressure. A typical example is illustrated below: IrH3 ((LPR2PC2H4) 2NH) (5 mg) is added to a solution of benzylidene acetone (2.0 g) in 2-propanol (10 g) and the reaction mixture stirred for 1 hour at room temperature. The solvent was evaporated under reduced pressure, resulting in > 99% of the saturated alcohol. The results are presented in Table 6.

References:

ABDUR-RASHID, Kamaluddin WO2004/96735, 2004, A2 Location in patent:Page 21-22

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