Templated C-C and C-N Bond Formation Facilitated by a Molybdenum(VI) Metal Center

被引：9

作者：

Zwettler, Niklas ^{[1
]}

Dupe, Antoine ^{[1
]}

Schachner, Joerg A. ^{[1
]}

Belaj, Ferdinand ^{[1
]}

Moesch-Zanetti, Nadia C. ^{[1
]}

机构：

[1] Graz Univ, Inst Chem, Inorgan Chem, A-8010 Graz, Austria

来源：

INORGANIC CHEMISTRY | 2015年 / 54卷 / 24期

基金：

奥地利科学基金会;

关键词：

X=Y-ZH SYSTEMS; 1,3-DIPOLAR CYCLOADDITION; POTENTIAL 1,3-DIPOLES; OLEFIN EPOXIDATION; DIOXO COMPLEXES; LIGANDS; ACTIVATION; ESTERS; OXO; DIOXOMOLYBDENUM(VI);

D O I：

10.1021/acs.inorgchem.5b02347

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Preparation of molybdenum dioxido complexes with novel iminophenolate ligands bearing pendant secondary amide functionalities led to unprecedented C-C and C-N coupling reactions of two alpha-iminoamides upon coordination. The diastereoselective cyclization to asymmetric imidazolidines occurs at the metal center in two consecutive steps via a monocoupled intermediate. A meaningful mechanism is proposed on the basis of full characterization of intermediate and final molybdenum-containing products by spectroscopic means and by single-crystal X-ray diffraction analyses. This process constitutes the first example of a diastereoselective self-cyclization of two alpha-iminoamides.

引用

页码：11969 / 11976

页数：8

共 48 条

[1] Recent advances in the catalytic asymmetric 1,3-dipolar cycloaddition of azomethine ylides [J].