33121-77-6Relevant academic research and scientific papers
Preparation method of o-alkynyl phenyl cyclobutanone and preparation method of naphthalenone
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Paragraph 0113-0129, (2021/06/09)
The invention provides a preparation method of o-alkynyl phenyl cyclobutanone and a preparation method of naphthalenone, and belongs to the technical field of compound synthesis. The method comprises the following steps: under the action of a palladium catalyst, a ligand and alkali, reacting o-bromophenyl cyclobutanone of a formula 1 structure with terminal alkyne of a formula 2 structure in a solvent at 80-100 DEG C for 12-24 hours, and separating and purifying a product after the reaction is finished to obtain the o-alkynyl phenyl cyclobutanone of a formula I structure. The invention also provides the preparation method of naphthalenone. The method is simple, raw materials are easy to obtain, and the prepared product is high in yield.
Activation of bismuth(III) derivatives in ionic liquids: Novel and recyclable catalytic systems for Friedel-Crafts acylation of aromatic compounds
Gmouh, Said,Yang, Hongly,Vaultier, Michel
, p. 2219 - 2222 (2007/10/03)
(Matrix presented) The activity of four bismuth(III) derivatives when employed as Friedel-Crafts catalysts for the acylation of aromatics was found to increase dramatically when dissolved in ionic liquids. Solutions of bismuth oxide or triflate in [emim][NTf2] and [bmim][NTf2] are the most efficient catalytic systems, with catalyst loading as low as 1% leading to clean, high-yielding acylation of a variety of benzene derivatives. These improved Friedel-Crafts catalytic systems can also be efficiently recycled as opposed to traditional systems.
