P -Chiral Phosphine–Sulfonate/Palladium-Catalyzed Asymmetric Copolymerization of Vinyl Acetate with Carbon Monoxide
✍ Scribed by Nakamura, Akifumi; Kageyama, Takeharu; Goto, Hiroki; Carrow, Brad P.; Ito, Shingo; Nozaki, Kyoko
- Book ID
- 125967657
- Publisher
- American Chemical Society
- Year
- 2012
- Tongue
- English
- Weight
- 559 KB
- Volume
- 134
- Category
- Article
- ISSN
- 0002-7863
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## Abstract Achiral and chiral cationic palladium catalysts, modified with atropisomeric PˆN ligands with different steric and electronic properties, can efficiently produce poly(styrene‐__alt__‐CO) with essentially complete regioregularity and variable tacticity, depending on the ligand geometry;
## Abstract In the aza‐Morita–BaylisHillman reaction of __N__‐sulfonated imines (__N__‐arylmethylidene‐4‐methylbenzenesulfonamides and others) with methyl vinyl ketone (MVK), we found that in the presence of a catalytic amount of the chiral phosphine Lewis bases (__R__)‐(−)‐6,6′‐bis[tris(3,3,4,4,5