Synthesis and Application of Planar Chiral NHC/Rh Complexes Bearing CoC4Ph4 Group

被引：0

作者：

Shimizu, Kyosuke ^{[1
]}

Kushima, Midori ^{[1
]}

Seki, Mizuki ^{[1
]}

Yasue, Risa ^{[1
]}

Yoshida, Kazuhiro ^{[2
,3
]}

机构：

[1] Chiba Univ, Dept Chem, Chiba 2638522, Japan

[2] Chiba Univ, Grad Sch Sci, Dept Chem, Chiba 2638522, Japan

[3] Chiba Univ, Grad Sch Sci, Dept Quantum Life Sci, Chiba 2638522, Japan

来源：

JOURNAL OF ORGANIC CHEMISTRY | 2024年 / 89卷 / 16期

关键词：

Compendex;

D O I：

10.1021/acs.joc.4c01347

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Sandwich compound-based planar chiral N-heterocyclic carbene (NHC) ligands having a bulky eta(5)-cyclopentadienyl-cobalt-eta(4)-tetraphenylcyclobutadiene core were developed, and their donor strengths were evaluated by determining the Tolman electronic parameter (TEP) of the Rh dicarbonyl complex. The TEP was high at 2048 cm(-1), as expected for an NHC ligand. The utility of the carbenes as chiral ligands was examined in the Rh-catalyzed asymmetric ring-opening reaction of oxabenzonorbornadienes with benzylamine, and the corresponding products were obtained with moderate enantioselectivities (up to 66% ee).

引用

页码：11811 / 11817

页数：7