Lesson plan
DuPhos
DuPhos is a class of organophosphorus compound that are used as ligands for asymmetric synthesis. The name DuPhos is derived from (1) the chemical company that sponsored the research leading to this ligand's invention, DuPont and (2) the compound is a diphosphine ligand type. Specifically it is classified as a C 2 -symmetric ligand, consisting of two phospholane rings affixed to a benzene ring. The ligand was introduced in 1991 by M.J. Burk and first demonstrated in asymmetric hydrogenation of certain enamide esters to amino acid precursors: : Other chiral diphosphine ligands were known at the time of invention, e.g. DIOP, DIPAMP, CHIRAPHOS, but DuPhos was found to be more effective.
Article summary
DuPhos is a class of organophosphorus compound that are used as ligands for asymmetric synthesis. The name DuPhos is derived from (1) the chemical company that sponsored the research leading to this ligand's invention, DuPont and (2) the compound is a diphosphine ligand type. Specifically it is classified as a C 2 -symmetric ligand, consisting of two phospholane rings affixed to a benzene ring. The ligand was introduced in 1991 by M.J. Burk and first demonstrated in asymmetric hydrogenation of certain enamide esters to amino acid precursors: : Other chiral diphosphine ligands were known at the time of invention, e.g. DIOP, DIPAMP, CHIRAPHOS, but DuPhos was found to be more effective.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.