Catalytic Alkylation of Indan and Tetralin by Olefins, Alcohols and Diethyl Ether
作者:Walter M. Kutz、J. E. Nickels、J. J. McGovern、B. B. Corson
DOI:10.1021/ja01192a017
日期:1948.12
Formal radical closure onto aromatic rings—a general route to carbocycles
作者:Derrick L. J. Clive、Rajesh Sunasee、Zhenhua Chen
DOI:10.1039/b803308k
日期:——
A general method is described for indirectly effecting radical carbocyclization of an alkyl chain onto an aromatic ring. Birch reductive-alkylation of aromatic tert-butyl esters with α,Ï-dibromides, chromium(VI)-mediated oxidation of the resulting 1,4-dienes and Finkelstein displacement of Brâ with NaI gives cross-conjugated ketones that undergo radical cyclization. The products are easily aromatized to phenols by silylation, Saegusa oxidation and treatment with BiCl3.H2O. A special feature of the route is that it allows attachment of a substituent to the original aromatic ring in place of the phenolic oxygen of the normal product.