Synthesis of Oximes, Conversion to Nitrile Oxides and Their Subsequent 1,3-Dipolar Cycloaddition Reactions under Microwave Irradiation and Solvent-Free Reaction Conditions. -Aldoximes and ketoximes (II) are readily synthesized from aldehydes and ketones (I) on Al 2 O 3 under microwave irradiation.
Synthesis of oximes, conversion to nitrile oxides and their subsequent 1,3-dipolar cycloaddition reactions under microwave irradiation and solvent-free reaction conditions
✍ Scribed by Béatrice Touaux; Françoise Texier-Boullet; Jack Hamelin
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 147 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1042-7163
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✦ Synopsis
Aldoximes and ketoximes were readily synthesized from aldehydes and hydroxylamine hydrochloride on Al 2 O 3 without solvent under microwave irradiation. At higher irradiation power, aldoximes dehydrated to nitriles and ketoximes rearranged to amides. Aldoximes reacted in a one-pot reaction with Nchlorosuccinimide and alkenes or alkynes over alumina under microwave irradiation to give isoxazolines or isoxazoles.
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