Acylation of Dibenzo-18-crown-6 with Alkali-metal Acetates in Polyphosphoric Acid

Saifullina, N. Zh.; Ташмухамедова, А. К.

doi:10.1007/s10593-005-0263-8

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Scheme 15 Bromomethylation Of Dbce1

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Cited by 3 publications

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“…It was demonstrated that there is a relation between the size of the counter cation of the acetate and the rate and regioselectivity of the reaction, due to the complexation between crown ether and cation. 90 Acyl derivatives, analogously to formyl ones, are suitable precursors for several functional Scheme 19 Functionalisation of BCE with formyl groups. groups including vinyl, 91 ester 92 and α,β-unsaturated ketones.…”

Section: Scheme 15 Bromomethylation Of Dbcementioning

confidence: 99%

Direct synthetic routes to functionalised crown ethers

et al. 2021

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Section: Scheme 15 Bromomethylation Of Dbcementioning

confidence: 99%

Direct synthetic routes to functionalised crown ethers

et al. 2021

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Catalytic Friedel–Crafts Acylation and Benzoylation of Aromatic Compounds Using Activated Hematite as a Novel Heterogeneous Catalyst

et al. 2010

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Catalytic Friedel-Crafts acylation of benzene and unactivated benzenes such as chlorobenzene and nitrobenzene have been successfully carried out using activated hematite (a-Fe 2 O 3 ) as a new, heterogeneous and green catalyst. Sonication of neat aFe 2 O 3 in a water bath under air atmosphere at room temperature followed by heating at 200 8C, dramatically increase the activity of a-Fe 2 O 3 . With the catalyst loading as low as 5.0 mol%, a wide variety of benzene derivatives were easily converted into the corresponding acylated products in a clean and highyielding acylation reaction. It was found that the activated a-Fe 2 O 3 could be efficiently recycled and reused several times by simple washing with ethyl acetate, this cannot be attained with most of the traditional catalysts.

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