Environmentally benign contemporary Friedel–Crafts acylation of 1-halo-2-methoxynaphthalenes and its related compounds under conventional and nonconventional conditions
作者:K. Rajendar Reddy、K.C. Rajanna、K. Uppalaiah
DOI:10.1016/j.tetlet.2013.04.075
日期:2013.6
Environmentally benign simple and practical method has been developed in cationic micellar media for the selective acylations of 1-halo-2-methoxynaphthalenes, 2-methoxynaphthalene, anisole, 2-methoxypyridine, and 2-methoxypyrimidine. Developed protocols afforded good to excellent yields of products in the presence of a catalytic amount of cationic micelles (CTAB and CTAC) under conventional and nonconventional
Aluminum dodecatungstophosphate (AlPW12O40) as a non-hygroscopic Lewis acid catalyst for the efficient Friedel–Crafts acylation of aromatic compounds under solvent-less conditions
Stable and non-hygroscopic aluminum dodecatungstophosphate (AlPW12O40), which is prepared easily from cheap and commercially available compounds was found to be an effective catalyst for Friedel–Crafts acylation reactions using carboxylic acids, acetic anhydride and benzoyl chloride in the absence of solvent under mild reaction conditions.
稳定且不吸湿的十二碳二磷酸铝(AlPW 12 O 40),可以容易地由廉价且可商购的化合物制备,被发现是在不存在羧酸的情况下使用羧酸,乙酸酐和苯甲酰氯进行Friedel-Crafts酰化反应的有效催化剂。在温和的反应条件下使用溶剂。
Friedel-Crafts acylation of arenes with carboxylic acids using silica gel supported AlCl_3
作者:KAVEH PARVANAK
DOI:10.3906/kim-0912-359
日期:——
Aromatic compounds react smoothly with carboxylic acids in the presence of silica gel supported aluminium trichloride to afford the corresponding ketones with high regioselectivity in high to excellent yields. The catalyst is stable (as a bench top catalyst) and can be easily recovered and reused without appreciable change in its efficiency.