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Synthesis of hindered spiro-oxindoles by photolysis of 1-(1-alkenyl)benzotriazoles

✍ Scribed by Jonathan K. Dutton; David P.M. Pleynet; A.Peter Johnson

Publisher: Elsevier Science
Year: 1999
Tongue: French
Weight: 736 KB
Volume: 55
Category: Article
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(99)00691-2

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✦ Synopsis

Photolysis of I-(1-alkoxy-l-alkenyl)benzotriazoles gives moderate yields of 2-alkoxyindolenines, which can be hydrolysed to oxindoles. A side reaction leads to the formation of iminooxetanes. The formation of the 2-alkoxy-indolenines is quite insensitive to steric hindrance at the reacting centres.

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