[5]Helicenes by tandem radical cyclisation

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• 作者：Harrowven ; David C. ; Nunn ; Michael I. T. ; Fenwick ; David R.
• 刊名：Tetrahedron Letters
• 出版年：2002
• 出版时间：October 7, 2002
• 年：2002
• 卷：43
• 期：41
• 页码：7345-7347
• 全文大小：115 K

文摘

A new and rapid approach to [5]helicenes is described. A central feature is the use of a sequential, non-reducing radical cyclisation reaction of (Z,Z)-1,4-bis(2-iodostyryl)benzene derivatives, viz. 3→1, mediated by tributyltin hydride.