118631-44-0Relevant articles and documents
Silica sulfuric acid-promoted deacylation of α-bromo-β-diketones
Aoyama, Tadashi,Kubota, Sho,Takido, Toshio,Kodomari, Mitsuo
, p. 484 - 485 (2011)
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.
Simple Method for sp2-sp3 and sp3-sp3 Carbon-Carbon Bond Activation in 2-Substituted 1,3-Diketones
Aoyama, Tadashi,Hayakawa, Mamiko,Kubota, Sho,Ogawa, Sumire,Nakajima, Erika,Mitsuyama, Emi,Iwabuchi, Taku,Kaneko, Haruki,Obara, Rina,Takido, Toshio,Kodomari, Mitsuo,Ouchi, Akihiko
supporting information, p. 2945 - 2956 (2015/09/28)
Simple and efficient methods were developed for sp2-sp3 and sp3-sp3 C-C bond-activation reactions of 2-substituted 1,3-diketones. 3-Substituted 3-bromopentane-2,4-diones were deacylated in the presence of an aromatic compound and a silica gel supported Bronsted acid containing sulfonic groups. The carbocation formed by cleavage of the sp3-sp3 C-C bond of the dione alkylated the aromatic compound.
Direct synthesis of α-bromoketones from alkylarenes by aerobic visible light photooxidation
Tada, Norihiro,Ban, Kazunori,Hirashima, Shin-Ichi,Miura, Tsuyoshi,Itoh, Akichika
supporting information; experimental part, p. 4701 - 4704 (2010/11/17)
The direct synthesis of α-bromoketones from alkylarenes by aerobic photooxidation with hydrobromic acid is reported. The key success for this direct oxidative reaction is due to control of bromination with acetic acid and ethanol, which are generated in situ by solvolysis of ethyl acetate in the course of the reaction.
