Chemistry Letters p. 484 - 485 (2011)
Update date:2022-08-04
Topics:
Aoyama, Tadashi
Kubota, Sho
Takido, Toshio
Kodomari, Mitsuo
Novel deacylation of α-bromo-β-diketones using silica sulfuric acid (SSA) has been developed. Deacylation of 3- bromopentane-2,4-diones and 2-bromobutane-1,3-diones were carried out in the presence of SSA in dichloroethane under mild conditions to obtain the corresponding α-bromo ketones in good to excellent yields. SSA also promoted the FriedelCrafts type alkylation of benzene with 3-(sec-alkyl)-2,4-pentanediones to give the corresponding triarylmethanes in high yields in benzene.
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