Synthesis of benzo[f]quinoline derivatives by condensation of N-arylmethylene-2-naphthylamines with acetylcyclohexane and 1-acetylcyclohexene
作者:V. I. Grachek
DOI:10.1007/s11176-005-0094-4
日期:2004.11
N -Arylmethylene-2-naphthylamines react with acetylcyclohexane and 1-acetylcyclohexene under mild conditions to afford 2-aryl-2-(2-naphthylamino)ethyl cyclohexyl and 1-cyclohexenyl ketones, respectively. Under more severe conditions (110°C), the reaction is accompanied by cyclization with formation of 3-aryl-1-cyclohexyl(or 1-cyclohexenyl)benzo[ f ]quinolines. Proper choice of the amount of catalyst
N- 芳基亚甲基-2-萘胺在温和条件下与乙酰基环己烷和1-乙酰基环己烯反应,分别得到2-芳基-2-(2-萘基氨基)乙基环己基和1-环己烯基酮。在更苛刻的条件下(110℃),反应伴随环化,形成3-芳基-1-环己基(或1-环己烯基)苯并[ f ]喹啉。催化剂,温度和反应时间的量的适当选择允许中间体3-芳基-1-环己基(或1-环己烯基)-3,4-二氢苯并[隔离 ˚F 〕喹啉。
Mercuration of Schiff bases of substituted benzylideneanilines
作者:Kuiling Ding、Yangjie Wu、Hongwen Hu、Lianfang Shen、Xin Wang
DOI:10.1021/om00059a058
日期:1992.11
As part of an effort to investigate substituent effects on the intramolecular coordination between N and Hg, the mercuration of 36 substituted benzylideneanilines was studied. The structure characterization of the products by IR, H-1 NMR, C-13 NMR, and MS indicates that for all of the reactions examined, the mercury is directed to the ortho position of the N-phenyl ring or the para position of the N-phenyl ring when these sites are not occupied by a substituent. The position of the HgCl group in the mercurated product of N-(4-nitrobenzylidene)-beta-naphthylamine has been confirmed by single-crystal X-ray determination, which also provided circumstantial evidence for the existence of the N--> Hg intramolecular coordination with a four-membered ring. The possible mechanism of the reaction was proposed, in which the mercuration at the ortho position of the N-phenyl ring was facilitated by the imino moiety upon formation of a coordination complex with Hg(OAc)2 in the first step, followed by a subsequent electrophilic substitution at the ortho position of the N-phenyl ring. This reaction is different from the metalation of benzylideneanilines by transition metals, in which the metal atom is usually directed to the ortho position of the C-phenyl ring, and provides a new example of the so-called 'cyclometalation" reaction.
Kozlov; Popova, Russian Journal of Organic Chemistry, 1999, vol. 35, # 4, p. 603 - 605
作者:Kozlov、Popova
DOI:——
日期:——
Kozlov; Yakubovich; Murashko, Russian Journal of Organic Chemistry, 2000, vol. 36, # 6, p. 777 - 780
作者:Kozlov、Yakubovich、Murashko
DOI:——
日期:——
β-oxoacids esters in the synthesis of benzo[f]quinoline derivatives
作者:K. N. Gusak、N. G. Kozlov
DOI:10.1134/s1070428007050119
日期:2007.5
Condensation of ethyl acetoacetate and ethyl 3-oxo-3-(2-furyl-, 2-quinolyl-, 3-pyridyl)propanoates with azomethines of 2-naphthylamine series led to the formation of ethyl (3-arylbenzo[f]quinol-1-yl)acetates and of esters of the corresponding 3-aryl-1-heteryl-2-benzo[f]quinolylcarboxylic acids. The intermediate reaction products were isolated: ethyl 5-(2-naphthylamino)-3-oxo-5-phenylpentanoate, 2-[(aryl)(2-naphthylamino)methyl]-3-heteryl-3-oxopropanoates, dihydro and tetrahydro derivatives of benzoquinolylacetic and benzoquinolinecarboxylic acids.