The intramolecular Friedel-Crafts cyclisation of ω-arylalkanoic acids, which is in the benzene series a valuable synthetic route to bicyclic ketones with medium-sized and large rings, has been investigated with ω-(1-naphthyl)alkanoyl chlorides. The lower members, including naphthyl-caproic acid, close the ring at position 2 to form IV. The higher homologous acids show a preference for annellation at
Plant-growth substances: ω-aryl- and ω-aryloxy-alkylcarboxylic acids
作者:K. Gaimster
DOI:10.1002/jsfa.2740070504
日期:1956.5
carboxylic acids of the type R[CH2] CO2H have been synthesized in connexion with studies of plant-growth activity. They include the first six or seven members of five homologous series of ω-substituted alkylcarboxylic acids, namely o-methoxyphenoxy-, p-chlorophenoxy-, 2:4-dichlorophenoxy-, 2:4:5-trichlorophenoxy- and 1-naphthyl-alkylcarboxylic acids; and five 1-naphthyl-alkylcarboxylic acids in which
A visible light-driven, copper-catalyzed aerobic oxidativecleavage of cycloalkanones has been presented. A variety of cycloalkanones with varying ring sizes and various α-substituents reacted well to give the distal keto acids or dicarboxylic acids with moderate to good yields.