“…22 Moreover, this plant oil has been also used as a feedstock for the synthesis of many fine chemicals such as p-methoxybenzaldehyde 23 and p-anisic acid. 24 In recent years, the investigation on the application of anethole in polymeric materials has received much attention. [25][26][27] However, most of the investigations employ complicated procedures for the synthesis of suitable monomers based on anethole.…”
Anethole, a naturally occurring aromatic compound which can be extracted abundantly from plants like star anise, fennel and basil, has been conveniently transformed to a functional monomer in an overall yield of 81% via a two-step procedure.
“…22 Moreover, this plant oil has been also used as a feedstock for the synthesis of many fine chemicals such as p-methoxybenzaldehyde 23 and p-anisic acid. 24 In recent years, the investigation on the application of anethole in polymeric materials has received much attention. [25][26][27] However, most of the investigations employ complicated procedures for the synthesis of suitable monomers based on anethole.…”
Anethole, a naturally occurring aromatic compound which can be extracted abundantly from plants like star anise, fennel and basil, has been conveniently transformed to a functional monomer in an overall yield of 81% via a two-step procedure.
“…10-15%) were achieved [5]. Alternatively, a high yield of benzoic acid, up to 81%, was obtained when the aerobic photooxidation of b-methylstyrene was carried out in ethyl acetate solvent in the presence of catalytic amounts of CBr 4 [6]. Recently, copper(II) chloride has been reported as a metal catalyst for the aerobic cleavage of aromatic alkenes.…”
The aerobic oxidative cleavage of a-methylstyrene and other benzylic olefins catalyzed by N-hydroxyphthalimide (NHPI) under solvent-free conditions is described. The reaction was remarkably accelerated by the addition of azo-initiator (2,2 0 -azobis(2-methylpropionitryl)) or transition metal salts (Mn, Cu, Co) in combination with NHPI. Alkylammonium salts and acetophenone were successfully applied to increase the solubility of the polar NHPI catalyst in non-polar substrates. The effects of the catalyst and reaction parameters on the conversion of the substrate and the selectivity for ketones were investigated. New insights into the oxidation mechanism and NHPI-ammonium salt interaction are presented.
“…Molecular oxygen has been considered as an ideal oxidant for organic synthesis because of its atom-economical and environmentally benign character. [4][5][6] Recently, a few elegant examples of aerobic oxidative C À C bond cleavage involving carbonyl compounds have been reported. Jiang and coworkers [7] reported a transition-metal-free aerobic oxidative CÀC bond cleavage of a-hydroxyketones and subsequent esterification (Scheme 1 a).…”
A novel copper‐catalyzed aerobic oxidative C(CO)C(alkyl) bond cleavage reaction of aryl alkyl ketones for CN bond formation is described. A series of acetophenone derivatives as well as more challenging aryl ketones with long‐chain alkyl substituents could be selectively cleaved and converted into the corresponding amides, which are frequently found in biologically active compounds and pharmaceuticals.
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