Hydrosilylation of Aldehydes and Ketones Catalyzed by a 2-Iminopyrrolyl Alkyl-Manganese(II) Complex
作者:Tiago F. C. Cruz、Luís F. Veiros、Pedro T. Gomes
DOI:10.1021/acs.inorgchem.1c03621
日期:2022.1.17
that of complex 2 corresponds to a monomer with a distorted tetrahedral coordination geometry. Complex 2 proved to be a very active precatalyst for the atom-economic hydrosilylation of several aldehydes and ketones under very mild conditions, with a maximum turnover frequency of 95 min–1, via a silyl-Mn(II) mechanistic route, as asserted by a combination of experimental and theoretical efforts, the respective
提出了一种定义明确且非常活跃的单组分锰 (II) 催化剂体系,用于醛和酮的氢化硅烷化。一、5-( 2,4,6- i Pr 3 C 6 H 2 )-2-[ N -( 2,6- i Pr 2 C 6 H 3 )甲亚氨基]吡咯钾( KL )与[ MnCl 2 (Py) 2 ] 得到双核 2-亚氨基吡咯基锰 (II) 氯化吡啶络合物 [Mn 2 κ 2 N , N' -5-(2,4,6- i Pr 3 C 6 H2 )-NC 4 H 2 -2-C(H)=N(2,6- i Pr 2 C 6 H 3 )} 2 (Py) 2 (μ-Cl) 2 ] 1。随后,配合物1与 LiCH 2 SiMe 3的烷基化反应得到相应的 (三甲基甲硅烷基)甲基-Mn(II)配合物 [Mnκ 2 N , N' -5-(2,4,6- i Pr 3 C 6 ) H 2 )-NC 4 H 2 -2-C(H)=N(2,6- i Pr