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ChemInform Abstract: A Spiroindolinopyran with Switchable Optical Activity.

✍ Scribed by L. EGGERS; V. BUSS

Publisher
John Wiley and Sons
Year
2010
Weight
28 KB
Volume
28
Category
Article
ISSN
0931-7597

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✦ Synopsis

A Spiroindolinopyran with Switchable Optical Activity.

-Photochemical switching between the diastereomeric spiropyrans (III) and (IV) does not lead to a decay of the optical activity. This behavior can be attributed to the asymmetric induction by the stereogenic center C-3. If the room temperature equilibrium concentrations of the diastereomers are frozen at Β‘ -40 β€’ C, irradiation with UV light displaces the equilibrium, causing information to be stored. The chiroptical properties enable subsequent reading of the data.

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