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Ruthenium-Catalyzed Formal [4 + 2] Cycloaddition of Alkynes with Alkenes: Formation of Cyclohexenedicarboxylates via Isomerization of Alkynes and Successive Diels—Alder Reaction.

✍ Scribed by Masashi Shiotsuki; Yasuyuki Ura; Takashi Ito; Kenji Wada; Teruyuki Kondo; Take-aki Mitsudo


Publisher
John Wiley and Sons
Year
2005
Weight
16 KB
Volume
36
Category
Article
ISSN
0931-7597

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Cycloadditions of Allyl Cations, 281)Nov
✍ Hoffmann, H. M. R. ;Vathke-Ernst, Heidrun 📂 Article 📅 1981 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 457 KB 👁 1 views

4Methyl-3-penten-2-01 (1) and cyclopentadiene react in an acidic two phase system at 0°C to form allylcyclopentenols 2 and norbornenylcarbinols 4. At 50°C and under similar conditions, 2 as well as 4 are equilibrated to allylcyclopentadienes 3, bicyclic olefins 5 and 6 , and tricyclic ether 7. With