10.1002/anie.201903766
Angewandte Chemie International Edition
COMMUNICATION
Table of Content Graphic
+
+
X-
X-
Over 40 years
P
P
P
P
I
I
Rh
Co
Synthesis remains elusive
Cobalt analog?
Schrock-Osborn type catalyst
This work:
+
+
iPr
iPr
iPr
-
BArF
iPr
BArF
iPr
iPr
-
4
4
P
P
P
I
I
Co
Co
P
iPr
iPr
16 e-, diamagnetic
substitutionally labile
18 e-, diamagnetic
Highly active precatalysts for asymmetric alkene hydrogenation
The cobalt analogs of the Schrock-Osborn type rhodium catalysts have been synthesized and characterized for the first time and
showed excellent catalytic asymmetric hydrogenation activity. Study of an isolated catalyst-substrate adduct revealed
enantioselection mirroring the classic Rh(I) asymmetric hydrogenation.
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