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2005
Reduction
O 0220
35- 049
[bmim]PF6/H2O Biphasic System Promoted Chemoselective Reduction of Aldehydes and Ketones with Potassium Borohydride as Reductant. — A series of aldehydes and ketones is efficiently reduced by potassium borohydride in an ionic liquid/
water biphasic system to afford the corresponding alcohols in high yield and purity. A
number of functional groups like nitro and chlorine remain intact. Aromatic ketones are
not as active as aromatic aldehydes and cyclic ketones. The ionic liquid can be recycled
and reused with no loss in activity. Advantages of the new method are mild conditions,
simple operation, short reaction time, ease work-up, high yields and recycling of the
ionic liquid. — (LUO, H.-M.; LI*, Y.-Q.; Chin. J. Chem. 23 (2005) 3, 345-348; Dep.
Chem., Jinan Univ., Guangzhou 510632, Peop. Rep. China; Eng.) — Bartels
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