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Rhodium-Catalyzed Regio- and Stereoselective Codimerization of Alkenes and Electron-Deficient Internal Alkynes Leading to 1,3-Dienes

✍ Scribed by Shibata, Yu; Hirano, Masao; Tanaka, Ken

Book ID: 126988393
Publisher: American Chemical Society
Year: 2008
Tongue: English
Weight: 106 KB
Volume: 10
Category: Article
ISSN: 1523-7060
DOI: 10.1021/ol800995r

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## Abstract We established that a cationic rhodium(I)/dppf or dppb complex catalyzes a regio‐ and diastereoselective intermolecular [4+2] carbocyclization of 5‐trimethylsilyl‐4‐pentynals with electron‐deficient alkenes leading to cyclohexanones. We also established that a cationic rhodium(I)/(__R__