2007年10月27日 · Find more information on the Altmetric Attention Score and how the score is calculated. A convenient access to substituted allyl enol carbonates was established through …

2007年11月11日 · It is a general notion that reaction of ketone enolates with “hard” electrophiles favor O-acylation while “soft” electrophiles favor C-acylation. 6 We postulated that the complex …

The O-Acylation of Ketone Enolates by Allyl 1H-Imidazole-1-carboxylate Mediated with Boron Trifluoride EtherateA Convenient Procedure for the Synthesis of Substituted Allyl Enol …

2024年10月18日 · Photoredox decarboxylative acylation of primary, secondary, and tertiary carboxylic acids afford the corresponding ketones with broad substrate scope and excellent …

2009年5月1日 · We disclose TFAA–H 3 PO 4 -mediated direct O-acylation of phenols and 2-naphthol (or 1-naphthol) using a free carboxylic acid without generating any C-acylated side …

The enolate derived from methyl 4,6-O-benzylidene-2-deoxy-α-D-erythro-hexopyranosid-3-ulose undergoes O-acylation exclusively with a variety of reagents, whereas C-acylation is …

2021年8月28日 · Carboxylic acids can realize a synthetase-catalyzed for-mal decarboxylative acylation by transfer of an acyl group from coenzyme A (CoA)-activated thioesters to deliver a …

The O-acylation of ketone enolates by allyl 1H-imidazole-1-carboxylate mediated with boron trifluoride etherate: a convenient procedure for the synthesis of substituted allyl enol carbonates.

2007年12月1日 · In kinetically controlled reactions of metal enolates with acetylating agents, O-acylation is the favored reaction with α-metalated ketones 2 and with solvent-separated ion …

2015年10月21日 · It has been proposed that a carboxylate ion, generated as a counter anion of the acylpyridinium cation generated by the reaction of an acid anhydride with DMAP, plays an …