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Synthesis of L–Au(I)–CF2H Complexes and Their Application as Transmetalation Shuttles to the Difluoromethylation of Aryl Iodides
Organometallics ( IF 2.5 ) Pub Date : 2021-08-16 , DOI: 10.1021/acs.organomet.1c00305
Patricia García-Domínguez 1
Affiliation  

We describe herein two alternative protocols to efficiently prepare difluoromethylgold(I) complexes bearing ancillary ligands with different electronic and steric properties. LAu–OX (X = H and t-Bu) species, formed in the presence of base, have been identified as intermediate complexes involved in these transformations. The application of these compounds as “CF2H transmetalation shuttles” from gold to palladium has been demonstrated in a Pd-catalyzed difluoromethylation reaction of aryl iodides, in which the Au-to-Pd transfer of “CF2H” is feasible under stoichiometric conditions. These findings will pave the way for catalytic manifolds in gold chemistry.

中文翻译:

L-Au(I)-CF2H 配合物的合成及其作为金属转移穿梭机在芳基碘二氟甲基化中的应用

我们在此描述了两种替代方案,以有效地制备带有不同电子和空间特性的辅助配体的二氟甲基金 (I) 配合物。LAu-OX(X = H 和t- Bu)物质在碱存在下形成,已被确定为参与这些转化的中间复合物。这些化合物作为从金到钯的“CF 2 H 金属转移穿梭”的应用已在 Pd 催化的芳基碘化物的二氟甲基化反应中得到证明,其中“CF 2 H”的 Au 到 Pd 的转移在化学计量下是可行的状况。这些发现将为金化学中的催化歧管铺平道路。
更新日期:2021-09-13
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