Synthesis of 2-acyl-1-naphthols by gold-catalyzed oxidative cyclization of 2-alkenylphenyl alkynyl ketones
摘要:
The gold(I)-catalyzed oxidative cyclization of 2-alkenylphenyl alkynyl ketones employing organic oxides as oxidants has been developed. This reaction involves aromatization to furnish 2-acyl-1-naphthols. Also, 10-acyl-9-phenanthrenols are analogously produced from the reaction of allcynyl 2-biphenyl ketones. (C) 2014 Elsevier Ltd. All rights reserved.
Free Radical Cyclization of 1,3‐Dicarbonyl Compounds Mediated by Manganese(III) Acetate with Alkynes and Synthesis of Tetrahydrobenzofurans, Naphthalene, and Trifluoroacetyl Substituted Aromatic Compounds
作者:Oguzhan Alagoz、Mehmet Yılmaz、A. Tarık Pekel
DOI:10.1080/00397910500501516
日期:2006.5
Abstract Furan derivatives were obtained from radicalcyclizations of 1,3‐dicarbonyl compounds mediated by Mn(OAc)3 with phenyl acetylene 2a (14–66% yields). Naphthalene derivates 4a and 4b were produced in the treatments with 2a. In addition to these, trifluoroacetyl substituted naphthalene 4c, benzofuran 4d, and benzothien 4e were obtained in the reactions of trifluoromethyl‐1,3‐dicarbonyls (1 g–i)
Bromide-Mediated C–H Bond Functionalization: Intermolecular Annulation of Phenylethanone Derivatives with Alkynes for the Synthesis of 1-Naphthols
作者:Tao Lu、Ya-Ting Jiang、Feng-Ping Ma、Zi-Jing Tang、Liu Kuang、Yu-Xuan Wang、Bin Wang
DOI:10.1021/acs.orglett.7b03186
日期:2017.12.1
formation of polysubstituted 1-naphthols. The usage of readily available bromine catalyst, broad substrate scope, and mild conditions make this protocol very practical. Mechanistic investigations reveal that the bromination of phenylethanone derivatives occurs to yield bromo-substituted intermediates, which react in situ with alkynes to furnish the desired 1-naphthols.
required for this reaction. The synthetic utility is demonstrated by pinacol coupling of ketyl radicals and benzannulation of α-carbonyl radicals with alkynes to give a series of highly substituted 1-naphthols in good to excellent yields. The readily available photocatalyst, mild reaction conditions, broad substrate scope, and high functional-group tolerance make this reaction a useful synthetic tool
α-Naphthol synthesis via knoevenagel condensation in the presence of molecular sieves
作者:Giles A. Taylor
DOI:10.1039/p19810003132
日期:——
malonate, ethyl acetoacetate, and ethyl benzoylacetate under Knoevenagel conditions in the presence of molecularsieves to give the 1-naphthols (2), (5), and (6). Glass wool is a less effective catalyst for formation of (2). 3,3-Diethoxycarbonyl-1,1-diphenylpropene (4) is converted into the naphthol (2) in high yield by heating with molecularsieves but its saturated analogue (3) is unaffected.