Nucleophilic 1,2-Shifts of Alkoxycarbony
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Heike Gowal; LΓͺ H. Dao; Hans Dahn
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Article
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1985
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John Wiley and Sons
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German
β 440 KB
## Abstract __tert__βButyl Ξ±,Ξ²βdioxobutyrate (hydrate; **1d**) undergoes, at medium or high pH, the benzilicβacid rearrangement with exclusive 1,2βshift of the COO(__t__βBu) group; the same is true for the corresponding isopropyl ester **1c** and ethyl ester **1b** at high pH, whereas at lower pH,