Chiral Octahedral Phosphano–Oxazoline Iridium(III) Complexes as Catalysts in Asymmetric Cycloaddition Reactions
收藏NIAID Data Ecosystem2026-03-09 收录
下载链接：
https://figshare.com/articles/dataset/Chiral_Octahedral_Phosphano_Oxazoline_Iridium_III_Complexes_as_Catalysts_in_Asymmetric_Cycloaddition_Reactions/2431651
下载链接
链接失效反馈官方服务：
资源简介：
The
synthesis and characterization of cationic iridium(III) aqua
complexes of the formula [IrH(H2O)(PN*)(PP)][SbF6]2 (PN* = chiral phosphano–oxazoline ligand; PP
= diphosphane) as well as that of the OPOF2-containing
complex [IrH(OPOF2)(PNiPr)(dppp)][SbF6] (10) are reported. The X-ray molecular structures
of [IrH(H2O)(PNInd)(dppe)][SbF6]2 (1), [IrH(H2O)(PNInd)(dppen)][SbF6]2 (2), and 10a have been determined.
Dichloromethane solutions of these aqua complexes efficiently catalyze
the enantioselective 1,3-dipolar cycloaddition of the nitrone N-benzylidenephenylamine N-oxide to methacrolein
and Diels–Alder reactions between cyclopentadiene and trans-β-nitrostyrenes. In the first
case, the catalytic reaction occurs with excellent endo selectivity and ee up to 85%; the Diels–Alder reaction occurs
rapidly at room temperature with good endo:exo selectivity and ee up to 90%. The dipolar cycloaddition
intermediates [IrH(methacrolein)(PNInd)(PP)][SbF6]2 (PP = (S,S)-chiraphos (11),
(R)-prophos (12)) have been characterized,
and the molecular structure of 11 has been determined
by an X-ray structural analysis.
创建时间：
2016-02-19
