- Acetylation of β-diketone copper(II) chelates by treatment with ketene
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A new efficient method for preparation of acyclic α-acetylated β-diketone copper(II) chelates and their corresponding geminal triketones by treatment of starting β-diketone cuprates 1 with ketene is described.
- Matare,Bohac,Hrnciar
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p. 381 - 382
(2007/10/02)
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- O-Acylation using organothallium compounds
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Thallous salts of β-dicarbonyl compounds, prepared by reaction of the β-dicarbonyl compounds with a thallous alkoxide, are treated with alkyl halides to give C-alkyl products in high yield, with acyl halides at room temperature to give C-acyl products, and with acyl halides at low temperatures to give O-acyl products. Thallous phenolates are esterified with acyl or aroyl halides. Anhydrides are also prepared, as are biaryls and bi-sec-alkyls. N-Heterocyclics, including purines and pyrimidines, are N-alkylated. Lactams are O-acylated or N-alkylated.
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