Annulation of stabilized phthalide anions with Michael acceptors provides a powerful
tool for the synthesis of quinoid natural products. This review details progress made
in this area building on the excellent review of this reaction published in 1995.
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1 Background
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2 Reaction of Phthalide Anions
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2.1 α,β-Unsaturated Esters
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2.2 Acyclic α,β-Unsaturated Ketones
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2.3 Cyclic α,β-Unsaturated Ketones
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2.4 2,5-Cyclohexadienones
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2.5 Furanones and Pyranones
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2.6 Quinones and Quinone Monoketals
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2.7 Arynes
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2.8 Other Michael Acceptors
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3 Related Annulations
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3.1 Homophthalic Anhydrides
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3.2 Toluate and Unstabilized Phthalide Anions
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4 Conclusion
Michael addition - quinones - stabilized phthalide anions - natural products - Hauser-Kraus
annulation