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Archive for the ‘Rhenium’ Category

C-S addition onto a terminal alkyne with rhenium

Posted by naturalproductman on November 21, 2012

Kazuhiko Takai and co-workers have reported in Organic Letters on a rhenium catalyzed C-S bond addition onto a terminal alkyne. We don’t usually see much of rhenium chemistry out there, but when there is something, it seems to be interesting.

C-S

OL paper

Posted in C-X Bond Breaking, Cascade Reactions, Methodology, Rhenium, Transition Metal | Leave a Comment »

Rhenium Catalyzed Approach to Aminoindanes

Posted by naturalproductman on August 30, 2010

Kazuhiko Takai and co-workers at Okayama University have published in Organic Letters on a rhenium catalyzed cyclization reaction between an arylimin and allene to form amino-indanes.

rhenium


OL paper

Posted in Cascade Reactions, Methodology, Rhenium, Ring forming, Transition Metal | Leave a Comment »

Didehydroxylation with Rhenium

Posted by naturalproductman on July 29, 2010

Dihydroxylations of olefins is a common technique to make 1,2-diols – however, recently in JACS, the Bergman and Ellman team have published on the reverse reaction using a rhenium catalyst.

didehydroxylation

JACS paper

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

Rhenium Catalyzed CO2 Insertion

Posted by naturalproductman on May 17, 2010

Did you know that rhenium can insert CO2 into an epoxide?  Here’s a DFT study of this reaction led by Hai-Shun Wu and co-workers from Shanxi Normal University.

rhenium

Organometallics paper

Posted in Cascade Reactions, Methodology, Rhenium, Ring expansion, Transition Metal | Leave a Comment »

Transposition of Allylic Alcohols not the Matrix

Posted by naturalproductman on April 13, 2010

Armen Zakarian and co-workers at UCSB have recently published in JACS on an allylic alcohol transposition using a rhenium oxide catalyst – a terminal alcohol transfers position with the internal alkene to yield an internal alcohol and terminal olefin.

allylic alcohol


JACS paper

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

 
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