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Archive for the ‘Transition Metal’ Category

Reactions involving transition metals

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 »

Sufur ylide chemistry – intramolecular cyclopropanation

Posted by naturalproductman on May 28, 2015

Nuno Maulide and co-workers from the University of Vienna have reported in JOC on an intramolecular cyclopropanation from a sulfur slide precursor and what follows is a nice mechanistic investigation.

sulfur

JOC paper

Posted in Computational, DFT, Gold, Mechanistic, Methodology, Transition Metal | Leave a Comment »

Brevisin via epoxide ring opening

Posted by naturalproductman on May 28, 2015

Timothy Jamison and co-workers have reported in JACS on their formal synthesis of brevisin.

polyepoxide

JACS paper

Posted in Cascade Reactions, Formal Synthesis, Rhodium, Total Synthesis, Transition Metal | Leave a Comment »

Towards halichondrins

Posted by naturalproductman on May 12, 2015

I would call the vinyl halide coupling reaction with an aldehyde using chromium/nickel combination a Nozaki Hiyama Kishi coupling, but maybe because the author is one of the people in the named reaction, it wasn’t mentioned in the paper as the “NHK reaction”, but rather, a Ni/Cr-mediated reaction.

halichondrin

JACS paper

JACS paper 2

Posted in Chromium, cross coupling, Methodology, Named Reactions, Nickel, Polyketides, Total Synthesis | Leave a Comment »

Oxygen transfer

Posted by naturalproductman on May 2, 2015

Chepuri Ramana and colleague at CSIR have reported in Organic Letters on a ruthenium catalyzed oxygen transfer reaction.
oxygen

OL paper

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

Methylene transfer

Posted by naturalproductman on May 2, 2015

Itaru Nakamura and co-workers from Tohoku University have reported in ACIE on a gold catalyzed methylene transfer sequence to access isoxazolines.

methylene

ACIE paper

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

Disorazole synthesis through metathesis

Posted by naturalproductman on May 2, 2015

Alison Hulme and co-workers from the University of Edinburgh have reported in ACIE on a metathesis approach to disorazole. Reminds me of the Hoveyda approach.

metathesis

ACIE paper

Posted in Asymmetric, C2-Symmetric, Metathesis, Methodology, Molybdenum, Transition Metal | Leave a Comment »

 
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