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Title: Engineering Dirhodium Artificial Metalloenzymes for Diazo Coupling Cascade Reactions**
Abstract

Artificial metalloenzymes (ArMs) are commonly used to control the stereoselectivity of catalytic reactions, but controlling chemoselectivity remains challenging. In this study, we engineer a dirhodium ArM to catalyze diazo cross‐coupling to form an alkene that, in a one‐pot cascade reaction, is reduced to an alkane with high enantioselectivity (typically >99 %ee) by an alkene reductase. The numerous protein and small molecule components required for the cascade reaction had minimal effect on ArM catalysis. Directed evolution of the ArM led to improved yields andE/Zselectivities for a variety of substrates, which translated to cascade reaction yields. MD simulations of ArM variants were used to understand the structural role of the cofactor on ArM conformational dynamics. These results highlight the ability of ArMs to control both catalyst stereoselectivity and chemoselectivity to enable reactions in complex media that would otherwise lead to undesired side reactions.

 
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Award ID(s):
1700982
NSF-PAR ID:
10288640
Author(s) / Creator(s):
 ;  ;  ;  ;  ;  
Publisher / Repository:
Wiley Blackwell (John Wiley & Sons)
Date Published:
Journal Name:
Angewandte Chemie International Edition
Volume:
60
Issue:
44
ISSN:
1433-7851
Page Range / eLocation ID:
p. 23672-23677
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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