乙酰丙酮氧钼催化的苯乙烯双羟化反应

doi:10.3724/SP.J.1095.2014.30592

摘要/Abstract

摘要： 以钼酸铵与乙酰丙酮反应生成催化剂乙酰丙酮氧钼MoO2(acac)2，考察了反应溶剂、氧化剂存在形式、不同助催化剂、反应温度、底物配比和催化剂量对苯乙烯双羟化反应的影响。在优化的反应条件下，以过氧叔丁醇为氧化剂得到苯乙烯双羟化反应的转化率、化学选择性和分离产率分别为85.2%、70.7%和53.3%。并探讨了可能的催化机理以及改进方向。

关键词: 乙酰丙酮氧钼, 苯乙烯, 双羟化, 催化机理, 邻二醇

Abstract: The catalyst molybdenyl acetylacetonate（MoO2(acac)2） was prepared by reaction of ammonium molybdate and acetylacetone. The effects of solvents, temperature, oxidants, co-catalysts and the ratio of substrate on the dihydroxylation of styrene were investigated. Under the optimized condition, conversion, chemoselectivity and isolated yield of dihydroxylation reaction are 85.2%, 70.7% and 53.3%, respectively. The possible catalytic mechanism and improving directions of catalytic reaction were also discussed.

Key words: molybdenyl acetylacetonate, styrene, dihydroxylation, catalytic mechanism, vicinal diol

中图分类号:

O625

冒荣芳, 徐丽明, 高曦, 程广斌, 杨红伟. 乙酰丙酮氧钼催化的苯乙烯双羟化反应[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.30592.

MAO Rongfang, XU Liming, GAO Xi, CHENG Guangbin, YANG Hongwei*. Dihydroxylation of Styrene Catalyzed by Molybdenyl Acetylacetonate[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30592.

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