A ligand represented by the formula (1):
R
1
R
2
N-Q
1
-X-Q
2
-NR
3
R
4
(1)
wherein R
1
, R
2
, R
3
and R
4
are each the same or different and represent a group represented by the formula (2):
wherein Q
3
is an optionally substituted alkylene group, an optionally substituted cycloalkylene group, an optionally substituted arylene group, or an optionally substituted divalent heterocyclic group, R
5
is an optionally substituted alkyl group, an optionally substituted aryl group or an optionally substituted heterocyclic group and R
6
is a substituent which may coordinate or bind to a metal atom, or R
5
and R
6
, taken together, may form a ring, Q
1
and Q
2
are each the same or different and represent an optionally substituted alkylene group or a single bond, and X is a divalent spacer.
A ligand represented by the formula (1):
R1R2N-Q1-X-Q2-NR3R4 (1)
wherein R1, R2, R3 and R4 are each the same or different and represent a group represented by the formula (2):
wherein Q3 is an optionally substituted alkylene group, an optionally substituted cycloalkylene group, an optionally substituted arylene group, or an optionally substituted divalent heterocyclic group, R5 is an optionally substituted alkyl group, an optionally substituted aryl group or an optionally substituted heterocyclic group and R6 is a substituent which may coordinate or bind to a metal atom, or R5 and R6, taken together, may form a ring, Q1 and Q2 are each the same or different and represent an optionally substituted alkylene group or a single bond, and X is a divalent spacer.
Transition metal-catalyzed reactions based on chiral amine oxazolinyl ligands
申请人:The Penn State Research Foundation
公开号:US20010044546A1
公开(公告)日:2001-11-22
The invention is drawn to novel transition metal catalysts for the practical synthesis of important chiral molecules. The transition metal catalysts comprise chiral ligands based on chiral amine oxazolinyl ligands. The invention includes methods of making the catalysts, and methods of performing reactions using the catalysts.
TRANSITION METAL-CATALYZED REACTIONS BASED ON CHIRAL AMINE OXAZOLINYL LIGANDS
申请人:The Pennsylvania State University
公开号:EP1030849A1
公开(公告)日:2000-08-30
METAL-ORGANIC FRAMEWORKS CONTAINING NITROGEN-DONOR LIGANDS FOR EFFICIENT CATALYTIC ORGANIC TRANSFORMATIONS
申请人:The University of Chicago
公开号:US20170182486A1
公开(公告)日:2017-06-29
Metal-organic framework (MOFs) compositions based on nitrogen donor-based organic bridging ligands, including ligands based on 1,3-diketimine (NacNac), bipyridines and salicylaldimine, were synthesized and then post-synthetically metalated with metal precursors, such as complexes of first row transition metals. Metal complexes of the organic bridging ligands could also be directly incorporated into the MOFs. The MOFs provide a versatile family of recyclable and reusable single-site solid catalysts for catalyzing a variety of asymmetric organic transformations. The solid catalysts can also be integrated into a flow reactor or a supercritical fluid reactor.