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Archive for the ‘Platinum’ Category

Cascade fluorination

Posted by naturalproductman on January 8, 2013

Michael Gagne and c0-workers at UNC have published in JACS on a cascade fluorination reaction.

fluorination

JACS paper

Posted in Cascade Reactions, Methodology, Platinum, Transition Metal | Leave a Comment »

Chain-walking reaction

Posted by naturalproductman on September 28, 2012

Takuya Kochi and co-workers at Keio University have reported in JACS on a chain walking reaction.

chain

JACS paper

Posted in Methodology, Palladium, Platinum, Ring forming, Transition Metal | Leave a Comment »

Platinum catalyzed dearomatization

Posted by naturalproductman on May 8, 2012

Ken Tanaka and co-workers at Tokyo University of Agriculture and Technology have reported in ACIE on a platinum catalyzed dearomatization reaction.

dearomatization

ACIE paper

Posted in Cascade Reactions, Dearomatization, Diastereoselective, Methodology, Platinum, Transition Metal | Leave a Comment »

Domino reactions

Posted by naturalproductman on September 9, 2011

Stefan Kirsch and co-workers from Technische Universität München have reported in ACIEE on their cascade reaction using either platinum or copper to form a dihydrofuran or furan from a cyclohexanone.

domino

ACIEE paper

Posted in Cascade Reactions, Copper, Methodology, Platinum, Transition Metal | Leave a Comment »

Reductive elimination vs. beta-hydride elimination

Posted by naturalproductman on July 5, 2011

Michael Gagne and co-workers from UNC have reported in Organometallics on an organoplatinum compound that readily undergoes reductive elimination to form a C-F bond.

fluorine

Organometallics paper

Posted in Methodology, Platinum, Transition Metal | Leave a Comment »

Cation-pi cyclization with platinum

Posted by naturalproductman on May 13, 2011

Michel Gagne and co-workers at UNC have reported in ACIEE on their platinum mediated cation-pi cyclization – this paper isolates the platinum complexed to the cyclized product.  This reaction is very popular – as we know from Johnson’s observations.

platinum

ACIEE paper

Posted in Cascade Reactions, Mechanistic, Methodology, Platinum, Transition Metal | Leave a Comment »

C-H vs. C-S Activation

Posted by naturalproductman on March 18, 2011

Datong Song and co-worker at the University of Toronto have reported in Organometallics on C-S and C-H activation reactions using either a platinum (0) or platinum (II) metal, respectively.

C-S

Organometallics paper

Posted in C-H activation, C-X Bond Breaking, Methodology, Platinum, Transition Metal | Leave a Comment »

Gold vs. Platinum

Posted by naturalproductman on January 24, 2011

Keisuke Kato and co-workers at Toho University have published in Tetrahedron on some cascade reactions mediated by gold or platinum.  Interestingly, depending on the metal, the reaction either undergoes a [3,3]-sigmatropic acyloxy rearrangement or a 1,2-acyloxy cyclization.

gold or platinum

 

Tetrahedron paper

Posted in Cascade Reactions, Gold, Methodology, Platinum, Transition Metal | Leave a Comment »

Platinum Carbene [3+2]

Posted by naturalproductman on December 21, 2010

Nobuharu Iwasawa and co-workers have published in JACS on a platinum catalyzed [3+2] cycloaddition between a platinum carbene and an enol ether.

3+2

 

JACS paper

Posted in Carbene, Cascade Reactions, Methodology, Platinum, Transition Metal | Leave a Comment »

Asymmetric [3+2] with Platinum

Posted by naturalproductman on June 14, 2010

Nobuharu Iwasawa and co-workers at the Tokyo Institute of Technology have published in JACS on a platinum catalyzed [3+2] cycloaddition reaction between an alkynyl ketone and enol.

3+2

JACS paper

Posted in Asymmetric, Cascade Reactions, Cycloaddition, Methodology, Pericyclic reactions, Platinum, Transition Metal | Leave a Comment »

 
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