4.8 Article

Cyclopentanoids by Uncatalyzed Intramolecular Carbonyl Ene (ICE) Reaction of α-Keto Esters

Journal

ORGANIC LETTERS
Volume 16, Issue 16, Pages 4062-4065

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol501204m

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Funding

  1. TU Dortmund

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The uncatalyzed intramolecular carbonyl ene (ICE) reaction of substituted epsilon,zeta-unsaturated alpha-keto esters to terpenoid-related building blocks has been studied. We found a beneficial effect of a silyl substituent at the ene segment on the kinetics of the ICE reaction. A generalizable and scalable synthesis of epsilon,zeta-unsaturated alpha-keto esters from allylic alcohols was developed.

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