InCl₃ and ZrCl₄ catalyzed regioselective reaction of 2,2′-dihydroxybiphenyl with terminal alkynes: synthesis of new dibenzo[d,f][1,3]dioxepines

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• 作者：Graziella Tocco ; Michela Begala ; Gabriele Meli ; Gianni Podda
• 关键词：Terminal alkynes ; Dibenzo[d ; f][1 ; 3]dioxepine ; Regioselectivity ; Lewis acids
• 刊名：Tetrahedron
• 出版年：2008
• 出版时间：7 July 2008
• 年：2008
• 卷：64
• 期：28
• 页码：6755-6759
• 全文大小：478 K

文摘

The regioselective reaction of 2,2′-dihydroxybiphenyl with terminal alkynes was found to be rapidly catalyzed by InCl₃ and ZrCl₄. The chemoselectivity of catalysts and alkynes for biphenol over water, together with the reaction mechanism are discussed in details.