Synthesis of Aromatic Cycloketones via Intramolecular Friedel - Crafts Acylation Catalyzed by Heteropoly Acids
作者:Kun Lan、Shao Fen、Zixing Shan
DOI:10.1071/ch06277
日期:——
the intramolecular Friedel–Crafts acylation of aryl benzoic acids catalyzed by heteropoly acids were investigated for the first time. Several aryl benzoic acids were refluxed and dehydrated in chlorobenzene in the presence of 0.2 equivalents of a heteropoly acid, and anthraquinone, anthrone, and xanthone were obtained in good yield. At the same time, an intermolecular Friedel–Crafts acylation and decarboxylation
Copper-Catalyzed Benzylic C−H Oxygenation under an Oxygen Atmosphere via <i>N</i>-H Imines as an Intramolecular Directing Group
作者:Line Zhang、Gim Yean Ang、Shunsuke Chiba
DOI:10.1021/ol200425c
日期:2011.4.1
Copper-catalyzed benzylic C-H oxygenation under an oxygen atmosphere was developed starting from carbonitriles and Grignard reagents via N-H imine intermediates. The present process is characterized by the following two-step sequence in a one-pot manner: (1) addition of Grignard reagents to carbonitriles to form N-H imines and (2) benzylic C-H oxygenation (C=O bond formation) triggered by 1,5-hydrogen atom transfer with transient iminyl copper species.
Guyot; Vallette, Annales de Chimie (Cachan, France), 1911, vol. <8> 23, p. 376
作者:Guyot、Vallette
DOI:——
日期:——
Bistrzycki; Traub, Helvetica Chimica Acta, 1924, vol. 7, p. 944
作者:Bistrzycki、Traub
DOI:——
日期:——
RUXER J.-M.; SOLLADIE G., J. CHEM. RES. MICROFICHE, 1978, NO 49, 4944-4965