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Archive for the ‘Dual Catalysis’ Category

Oxidopyrylium promoted [5+2]

Posted by naturalproductman on August 26, 2011

Before this paper I only thought about transition metals or the combination of transition metal and organocatalyst when thinking about dual catalysis.  Jacobsen and co-workers reported in JACS on a dual catalysis involving two organocatalysts.

5+2

JACS paper

Posted in Cascade Reactions, Cycloaddition, Dual Catalysis, Methodology, Organocatalytic, Pericyclic reactions | Leave a Comment »

Dual catalysis

Posted by naturalproductman on July 26, 2011

Barry Trost and co-workers have reported in JACS on a dual catalysis reaction using a vanadium allenoate and a palladium pi allyl unit to form alpha,beta-unsaturated ketones.

vanadium

JACS paper

Posted in Dual Catalysis, Methodology, Named Reactions, Palladium, Transition Metal, Vanadium | Leave a Comment »

Copper-rhodium system

Posted by naturalproductman on July 5, 2011

Shunsuke Chiba and co-workers from Nanyang Technological University have reported in JOC on a copper/rhodium relay catalytic system to access azaheterocycles.

azaheterocycles

JOC paper

Posted in C-H activation, Cascade Reactions, Copper, Dual Catalysis, Methodology, Rhodium, Ring forming, Transition Metal | Leave a Comment »

Dual Catalysis

Posted by naturalproductman on January 25, 2011

Barry Trost and co-worker have published in JACS on a reaction involving dual catalysis. That is, a palladium catalyst and a vanadium catalyst independently reacting with two separate substrates then the two intermediate metal species join to make the product.  In this case, the palladium catalyst makes a pi-allyl intermediate from an allylic carbonate and the vanadium catalyst rearranges a propargylic alcohol to form an allenoxy vanadium intermediate.

dual catalysis

JACS paper

Posted in Cascade Reactions, Dual Catalysis, Methodology, Palladium, Transition Metal, Vanadium | Leave a Comment »

 
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