Synthesis of carbazoles <span class="math"><math><mtext>via</mtext></math></span> 2-vinylindoles.期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Synthesis of carbazoles $via$ 2-vinylindoles.

Authors:	J Bergman B Pelcman

Institution:	Department of Organic chemistry, Royal Institute of Technology, S-100 44 Stockholm, Sweden

Abstract:	2-Vinylindoles are obtained from the Fischer indolization of α,β-unsaturated ketones. Heating 2-(2-methylpropenyl)indole (4) with the Vilsmeier reagent (DMF/POCl₃) gave 2-methylcarbazole in good yield, presumably $via$ an electrocyclic ring closure of a hexatrienic intermediate.

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