5 years ago

Switch in Catalyst State: Single Bifunctional Bi-state Catalyst for Two Different Reactions

Switch in Catalyst State: Single Bifunctional Bi-state Catalyst for Two Different Reactions
Joyanta Choudhury, Shrivats Semwal
Disclosed here is a molecular switch which responds to acid-base stimuli and serves as a bi-state catalyst for two different reactions. The two states of the switch serve as a highly active and poorly active catalyst for two catalytic reactions (namely a hydrogenation and a dehydrogenative coupling) but in a complementary manner. The system was used in an assisted tandem catalysis set-up involving dehydrogenative coupling of an amine and then hydrogenation of the resulting imine product by switching between the respective states of the catalyst. In a state: An acid-base responsive bi-state catalyst controls the rates of two different catalytic processes in a complementary manner. This concept was used in an assisted tandem catalysis by switching between catalyst states to achieve the desired reaction sequence.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/anie.201702142

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