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DBL%20Hendrix%20small.png College chemistry, 1983

Derek Lowe The 2002 Model

Dbl%20new%20portrait%20B%26W.png After 10 years of blogging. . .

Derek Lowe, an Arkansan by birth, got his BA from Hendrix College and his PhD in organic chemistry from Duke before spending time in Germany on a Humboldt Fellowship on his post-doc. He's worked for several major pharmaceutical companies since 1989 on drug discovery projects against schizophrenia, Alzheimer's, diabetes, osteoporosis and other diseases. To contact Derek email him directly: derekb.lowe@gmail.com Twitter: Dereklowe

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In the Pipeline: Don't miss Derek Lowe's excellent commentary on drug discovery and the pharma industry in general at In the Pipeline

In the Pipeline

« Arena and Lorcaserin, Back at the FDA | Main | Competitive Intelligence: Too Much or Too Little? »

May 10, 2012

The World of Metal-Catalyzed Couplings

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Posted by Derek

Here's an excellent article, with copious references, tracing the history of what we now know as the metal-catalyzed coupling field. Victor Snieckus of Queen's University, Thomas Colacot (Johnson Matthey) and co-authors go back to the Wurtz and Glaser reactions of the 1850s and 60s, up through the Ullmann reaction (1891, and still very much with us) and Kharasch and Cadiot-Chodkiewicz couplings (1940s) before breaking into the world of palladium with the Wacker oxidation.

Along the way, one learns that the discoverer of palladium (Wollaston) could never interest anyone in the metal, and almost all of it that he'd extracted was still sitting on the shelf, unsold, at his death. Time vindicated him, and how - it's now perhaps the most essential catalytic metal in the world. The late 1960s were a turning point:

Entry of Richard Heck: Following post-doctoral studies, Heck accepted a position at Hercules Powder Co where he was afforded freedom that is seldom experienced by the modern industrial chemist. Briefed with the task of “doing something with transition metals,” Heck investigated the chemistry of cobalt carbonyl complexes. Although this work generated many interesting observations, finding profitable applications for his research proved difficult. Inspired by his colleague Pat Henry's work on the Wacker oxidation, Heck's attention turned in the direction of arylpalladium chemistry.

He tried Wacker-type conditions with other reagents around to try to intercept the palladium intermediate, and organomercurys obliged with an immediate reaction. The story from there is a trip through a good swath of the periodic table, and the development of an awful lot of knowledge and expertise in metal complexes. Enter then Mizoroki, Kumada, Sonogashira, Negishi, Stille, Suzuki and many others. It's a long, complex, story, but this paper should serve as the definitive overview, and an excellent look at how chemistry (and science in general) go about discovering and developing things.

Comments (4) + TrackBacks (0) | Category: Chemical News


COMMENTS

1. RB Woodweird on May 11, 2012 6:43 AM writes...

Now I have to undertake the awful calculus of determining whether it is worth $39.95 to actually read the referenced article.

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2. simpl on May 11, 2012 8:09 AM writes...

I got in without problems, guess my company has an account. It is, as Derek says, a good overview, reminding you of things you knew, but forgot that they are relevant. It is worth as much as a well-researched newspaper article, say from the Washington Post.

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3. Brendan on May 11, 2012 8:21 AM writes...

Just for fun: http://chemscrapes.blogspot.com/2012/05/ok.html

Permalink to Comment

4. Quintus on May 11, 2012 9:10 AM writes...

RB: I have a copy, if you wish to save $40 contact me at quintus@me.com

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