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Pinacol Coupling Reactions Catalyzed by Active Zinc
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作者 Hui ZHAO Wei DENG Qing Xiang GUO 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第11期1459-1462,共4页
Pinacol coupling reactions catalyzed by active zinc revealed high activity and extensive suitability. The efficiency of the reaction was improved apparently owing to decreasing reductive potential of zinc. In addition... Pinacol coupling reactions catalyzed by active zinc revealed high activity and extensive suitability. The efficiency of the reaction was improved apparently owing to decreasing reductive potential of zinc. In addition, the results indicated that the zinc activity has a direct relation to the coupling reactivity compared to untreated zinc or other general active zinc. 展开更多
关键词 pinacol coupling reaction active zinc carbonyl compounds electron transfer.
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An Efficient System TiCl_4-Al for the Homocoupling Reaction of Aromatic Aldehydes 被引量:1
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作者 LI Ting-you, WANG Li-ping, CUI Wei, ZHAO Jian-zhang and WANG Zong-mu (College of Life Science, Jilin University, Changchun 130023, P. R. China) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2000年第4期320-323,共4页
The reduction of TiCl4(THF)2 with Al in CH2Cl2 gave a green solution of [Ti2(μ-Cl)2Cl4· (THF)4] (1) which was found to promote the reductive homocoupling of aromatic aldehydes to yield symmetrical 1, 2-diols wit... The reduction of TiCl4(THF)2 with Al in CH2Cl2 gave a green solution of [Ti2(μ-Cl)2Cl4· (THF)4] (1) which was found to promote the reductive homocoupling of aromatic aldehydes to yield symmetrical 1, 2-diols with high diasterepselectivities. 展开更多
关键词 pinacol coupling reaction Aromatic aldehyde DIASTEREOSELECTIVITY
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Reduction and Coupling Reaction of Carbonyl Compounds by Aluminum Powder and a Small Amount of Oxalic Acid in Water 被引量:1
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作者 袁仕祯 汪志勇 李真 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2006年第1期141-145,共5页
A convenient pinacol coupling of aromatic aldehydes and aryl methyl ketones has been achieved with high yields by aluminum powder in the presence of oxalic acid in water. However, the diastereoselectivities of pinacol... A convenient pinacol coupling of aromatic aldehydes and aryl methyl ketones has been achieved with high yields by aluminum powder in the presence of oxalic acid in water. However, the diastereoselectivities of pinacols were not satisfying, and most aliphatic aldehydes and diaryl ketones have been found to be unreactive under the same conditions. 展开更多
关键词 aluminum mediator pinacol coupling reaction aqueous media
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