- Highly Syn-?-Facial Preference in the Diels-Alder Reactions of 1,2,3,4,5-Pentamethylcyclopentadienes Having Carboxy, Ethoxycarbonyl, and Cyano Substituents at 5-Positions
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Diels-Alder reactions of 1,2,3,4,5-pentamethylcyclopentadienes having carboxy, alkoxyccarbonyl, and cyano substituents at 5-positions with N-phenylmaleimide preferentially afforded the corresponding syn-attack products with the ratio of syn/anti=80 : 20 to 100 : 0, while the diene having 5-hydroxymethyl moiety gave the anti-attack product exclusively.
- Ishida, Masaru,Tomohiro, Shingo,Shimizu, Minako,Inagaki, Satoshi
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p. 739 - 740
(2007/10/03)
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