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General Procedure for Defunctionalization of Carbonyl Group with PMHS-B(C6F5)3. To a solution of carbonyl compound (1 mmol) in dry CH2Cl2 (5 mL) and tris (pentafluoro phenyl) borane (5 mol %) was slowly added polymethylhydro-siloxane (3 mmol) at room temperature. After 5-20 min, a vigorous effervescence (like foam) was observed. At this point,the solvent was evaporated and reaction mixture was dissolved in hexane and filtered through a silica gel pad using hexane.
Evaporation of the volatiles afforded the reduction product in pure form.
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yinfaji: ½ð±Ò+10, ·­ÒëEPI+1 2012-05-07 05:04:19
°®ÓëÓêÏÂ: ½ð±Ò+1 2012-05-19 20:06:40
sltmac: ½ð±Ò+5 2012-05-22 07:58:55
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