Copper Pincer Complexes as Advantageous Catalysts for the Heteroannulation of<i>ortho</i>-Halophenols and Alkynes
作者:María Jesús Moure、Raul SanMartin、Esther Domínguez
DOI:10.1002/adsc.201301010
日期:2014.6.16
A new, non‐symmetrical copper(II) pincer complex catalyzes much more efficiently the formation of benzofuran by the reaction between ortho‐iodophenols and alkynes. The lowest catalyst loadings are realized for this reaction, and bromo‐ and chlorophenols are heteroannulated for the first time. Strong evidence for hydrophenoxylation and intramolecular halogen atom‐transfer steps catalyzed by this remarkably
一种新型的非对称铜(II)钳形络合物通过邻碘代酚与炔烃之间的反应更有效地催化苯并呋喃的形成。该反应的催化剂负载量最低,并且溴和氯苯酚是首次异环化的。有力的证据证明了这种显着的活性,可循环利用的均相催化剂催化的加氢苯氧基化和分子内卤素原子转移步骤。