Reaction of metal alkoxides with 3-alkyl-substituted acetylacetone derivatives -: coordination vs. hydrodeacylation
Reaction of metal alkoxides with 3-alkyl-substituted acetylacetone derivatives -: coordination vs. hydrodeacylation
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DOI：
10.1039/b400364k
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发表时间：
2004-01-01
影响因子：
3.3
通讯作者：
Schubert, U
中科院分区：
文献类型：
--
作者：
Puchberger, M;Rupp, W;Schubert, U
Ti（（OPr）-Pr-1）（4）或Zr（OPr）（4）与1或2摩尔当量的3-烷基取代的乙酰丙酮衍生物3-乙酰基-6-三甲氧基甲硅烷基己烷-2-酮或3-乙酰基戊烷-2-酮的反应不仅得到相应的β-二酮络合物，而且导致约15%的β-二酮的加氢脱酰化。在较强的刘易斯酸中，Al（（OBu）-Bu-s）（3）的加氢脱酰作用占优势。当金属醇盐和β-二酮以1：5的比例反应时，加氢脱酰作用受到抑制。
Reaction of Ti((OPr)-Pr-i)(4) or Zr(OPr)(4) with 1 or 2 molar equiv of the 3-alkyl-substituted acetylacetone derivatives 3-acetyl-6-trimethoxysilylhexane-2-one or 3-acetylpentane-2-one not only gives the corresponding beta-diketonate complexes but also results in about 15% hydrodeacylation of the beta-diketone. With the stronger Lewis acid Al((OBu)-Bu-s)(3) hydrodeacylation prevails. Hydrodeacylation is suppressed when a 1 : 5 ratio of metal alkoxide and beta-diketone is reacted.