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 radical cyclizations 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)
摘要 呋喃衍生物是通过 Mn(OAc)3 介导的 1,3-二羰基化合物与苯乙炔 2a 的自由基环化获得的(产率 14-66%)。萘衍生物 4a 和 4b 在用 2a 的处理中产生。除此之外,三氟甲基-1,3-二羰基化合物(1g-i)与2a反应得到三氟乙酰基取代萘4c、苯并呋喃4d和苯并噻吩4e。