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Photochemical cycloaddition of 4-cyclopentene-1,3-diones with olefins. Selective oxetane formation

✍ Scribed by Yoshida Zen-ichi; Kimura Makoto; Yoneda Shigeo


Publisher
Elsevier Science
Year
1974
Tongue
French
Weight
181 KB
Volume
15
Category
Article
ISSN
0040-4039

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✦ Synopsis


Although photochemical cycloaddition of unsaturated cyclic ketones has been extensively studied from synthetic and mechanistic viewpoints,' photoreaction of 2-ene-1,4-dione in which the second carbonyl chromophore is


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Reactions of 1,1-bis(dimethylamino)-1,3-
✍ Sustman, Reiner ;Rogge, Monika ;NΓΌchter, Ursula ;Bandmann, Heinz πŸ“‚ Article πŸ“… 1992 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 884 KB

+ 2) Cycloaddition / Zwitterion formation / Ketene aminal l,l-Bis(dimethylamino)-1,3-butadiene (1) as a strong donor diene = 0.03 V vs. SCE, 1st IP, = 6.94 eV) is treated with acrylonitrile, dimethyl dicyanofumarate, and tetracyanoethylene. Cycloaddition with acrylonitrile is slow and requires eleva