Catalysis Involving Phosphinite-Based Metallacycles
Catalysis Involving Phosphinite-Based Metallacycles
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DOI：
10.1021/acscatal.5b01688
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发表时间：
2015-11-01
期刊：
影响因子：
12.9
通讯作者：
Guan, Hairong
中科院分区：
文献类型：
--
作者：
Adhikary, Anubendu;Guan, Hairong
亚膦酸基金属杂环化合物是重要的中间体、催化剂前体或催化剂，用于各种化学转化。P-O键的容易、可逆的形成允许次膦酸酯充当催化导向基团，其导致更有效和选择性的金属催化过程。相对低的成本和方便的合成使金属环次膦酸酯配合物成为催化研究的有吸引力的化合物。鉴于在开发相关的膦和亚磷酸酯基催化剂的高度兴趣，这个角度特别侧重于这些不同的金属环配合物在催化反应之间的比较。在许多实例中，基于次膦酸盐的金属杂环是更有效的催化剂，这是由于用于限速步骤的更好匹配的配体性质或络合物向催化活性物质的更快转化。
Phosphinite-based metallacycles are important intermediates, catalyst precursors, or catalysts for a variety of chemical transformations. Facile, reversible formation of P-O bonds allows phosphinites to act as catalytic directing groups that lead to more efficient and selective metal-catalyzed processes. Relatively low costs and convenient syntheses make metallacyclic phosphinite complexes attractive compounds for catalytic studies. Given the high interest in developing the related phosphine- and phosphite-based catalysts, this Perspective focuses specifically on the comparisons between these different metallacyclic complexes in catalytic reactions. In a number of examples, phosphinite-based metallacycles are more efficient catalysts due to better-matched ligand properties for rate-limiting steps or faster conversion of the complexes to catalytically active species.