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Archive for the ‘Transition Metal’ Category

Reactions involving transition metals

Ni-catalyzed cyclopropanation

Posted by naturalproductman on July 30, 2015

Peter Chen and co-workers from ETH Zurich have reported in ACIE on a nickel catalyzed cyclopropanation. Looks similar to a Corey-Chaykovsky cyclopropanation because of the formation of an ylide.

nickel

ACIE paper

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

Hydroamidocarbonylation

Posted by naturalproductman on July 30, 2015

Matthias Keller and co-workers have reported in ACIE on a hydroamidocarbonylation of olefins.
hydroamidocarbonylation

ACIE paper

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

4pi-Electrocyclic ring opening cascade

Posted by naturalproductman on July 23, 2015

Kiyosei Takasu and co-workers from Kyoto University have reported in JACS on a ring expansion cross coupling cascade.

JACS paper

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

Iron cross coupling with vinyl acetates

Posted by naturalproductman on July 17, 2015

Axel Jacobi von Wangelin and co-workers at the University of Regensburg have reported in ACIE on an iron catalyzed cross coupling between alkenyl acetates and an alkyl magnesium halide unit.

iron

ACIE paper

Posted in cross coupling, Iron, Transition Metal | Leave a Comment »

Guanacastepene syntheses

Posted by naturalproductman on July 11, 2015

Chin-Kang Sha and colleague from National Tsing-Hua University have reported in Organic Letters on the syntheses of guanacastapenes N and O.

guanacastepene

OL paper

Posted in Copper, Diels-Alder, Kinetic resolution, Methodology, Named Reactions, Radical Chemistry, Sesquiterpenes, Total Synthesis, Transition Metal | Leave a Comment »

Co-catalyzed reduction of nitriles to amines

Posted by naturalproductman on July 11, 2015

David Milstein and co-workers from Weizman Institute of Science have reported in JACS on a cobalt-pincer complex that reduces nitriles to primary amines.

amine

JACS paper

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

Alkoxycarbonylation of allenes – regioselective switching by ligand

Posted by naturalproductman on June 30, 2015

Matthias Beller and co-workers have reported in JACS on a ligand controlled regioselectivitiy switching of an alkoxycarbonylation of an allene substrate.

JACS paper

Posted in Methodology, Palladium, Regioselective, Transition Metal | Leave a Comment »

Ru-catalyzed metathesis of fluoro-olefins and enol ethers

Posted by naturalproductman on June 6, 2015

Yusuke Takahira and colleague at Asahi Glass Co. have reported in JACS on a cross metathesis between fluoro-olefins and enol ethers.

metathesis

JACS paper

Posted in Metathesis, Ruthenium, Transition Metal | Leave a Comment »

Nodulisporic acid D synthesis

Posted by naturalproductman on June 6, 2015

Amos Smith and co-workers have reported in JACS on the synthesis of nodulisporic acid D.

alkaloid

JACS paper

Posted in Alkaloids, Total Synthesis, Transition Metal | Leave a Comment »

Syn-1,3-carbonate access

Posted by naturalproductman on May 28, 2015

Matthew Gaunt and colleague at the University of Cambridge have reported in ACIE on a method for the synthesis of syn-1,3-carbonates.

Cu

ACIE paper

Posted in Copper, Hypervalent Iodine, Methodology, Transition Metal | Leave a Comment »

 
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