Tetrahedron

Modification of photochemical reactivity by cyclodextrin complexation: selectivity in photo-claisen rearrangement

MS Syamala, V Ramamurthy

Index: Syamala, M, S.; Ramamurthy, V. Tetrahedron, 1988 , vol. 44, # 23 p. 7223 - 7233

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Citation Number: 32

Abstract

Photorearrangements of meta-alkoxyphenylallyl ethers 1-5. in ethanol, in water and as complexes of a and β-cyclodextrins have been investigated. The ratio of the two ortho rearrangement products was dependent both on the length of the alkoxy substituent and on that of the host cavity suggesting that, subtle and rationale engineering manipulation is required to achieve exclusive obtention of only one ortho isomer. It is speculated that α- ...