A green procedure for the protection of carbonyl compounds catalyzed by iodine in ionic liquid

Aldehydes and ketones are protected with ethylene glycol in the presence of a catalytic amount of iodine in PEG ionic liquid (IL 400) under mild conditions to afford the corresponding ketals in good yields. The recovery of iodine is facilitated by the ionic liquid. The recovered catalyst was reused...

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Bibliographic Details
Published in:Tetrahedron letters 2008-12, Vol.49 (50), p.7110-7112
Main Authors: Ren, Yi-Ming, Cai, Chun
Format: Article
Language:English
Subjects:
Carbonyl compounds
Ionic liquid
Molecular iodine
Protection
Recyclable
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Summary:Aldehydes and ketones are protected with ethylene glycol in the presence of a catalytic amount of iodine in PEG ionic liquid (IL 400) under mild conditions to afford the corresponding ketals in good yields. The recovery of iodine is facilitated by the ionic liquid. The recovered catalyst was reused six times with consistent activity.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2008.09.088