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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 24, Number 4
BKCSDE 24(4)
April 20, 2003

Title	(Pyridine)(tetrahydroborato)zinc Complex, [Zn(BH4)2(py)], as a New Stable, Efficient and Chemoselective Reducing Agent for Reduction of Carbonyl Compounds
Author	Behzad Zeynizadeh, Fariba Faraji
Keywords	Reduction, Tetrahydroborato, Carbonyl compounds, Chemoselective, Pyridine
Abstract	(Pyridine)(tetrahydroborato)zinc complex, [Zn(BH4)2(py)], as a stable white solid, was prepared quantitatively by complexation of an equimolar amount of zinc tetrahydroborate and pyridine at room temperature. This reagent can easily reduce variety of carbonyl compounds such as aldehydes, ketones, acyloins, a-diketones and a, b-unsaturated carbonyl compounds to their corresponding alcohols in good to excellent yields. Reduction reactions were performed in ether or THF at room temperature or under reflux conditions. In addition, the chemoselective reduction of aldehydes over ketones was accomplished successfully with this reducing agent.
Page	453 - 459
Full Text	PDF

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