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Photochemical [2 + 2] Cycloaddition of Acetylene to Chiral 2(5 H )-Furanones

✍ Scribed by Alibés, Ramon; de March, Pedro; Figueredo, Marta; Font, Josep; Fu, Xiaolin; Racamonde, Marta; Álvarez-Larena, Ángel; Piniella, Juan F.

Book ID
127307053
Publisher
American Chemical Society
Year
2003
Tongue
English
Weight
123 KB
Volume
68
Category
Article
ISSN
0022-3263

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Stereoselective [2+2] photocycloaddition
Stereoselective [2+2] photocycloaddition of acetylene to chiral 2(5H)-furanones
✍ Ramon Alibés; Pedro de March; Marta Figueredo; Josep Font; Marta Racamonde 📂 Article 📅 2001 🏛 Elsevier Science 🌐 French ⚖ 71 KB

The photochemical [2+2] cycloaddition of acetylene to chiral 2(5H)-furanones is investigated. The effect of the substituent at the stereogenic center of the lactone on the chemical yield and facial diastereoselectivity is evaluated. Using a C 2 -symmetric bis-lactone as substrate, a diastereomeric e

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Photochemical [2+2] cycloaddition of cyclicenones to(5R)-5-menthyloxy-2[5H]-furanone
✍ Samuel Bertrand; Norbert Hoffmann; Jean-Pierre Pete 📂 Article 📅 1998 🏛 Elsevier Science 🌐 French ⚖ 872 KB

The [2+2] Photocycloaddition of different cyclic enones to (5R)-5-menthyloxy-2[5H]furanone is investigated. The diastereoselectivity relative to the chiral acetal centre and the regio and the exo/endo ratios of the products have been determined. By variation of the structure of cyclic enones, the di