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论文类型：期刊论文

发表时间：2011-12-30

发表刊物：TETRAHEDRON

收录刊物：Scopus、SCIE

卷号：67

期号：52

页面范围：10147-10155

ISSN号：0040-4020

关键字：Electrophilic iodocyclization; Iodine; Dihaloheterocycles

摘要：An efficient and facile electrophilic iodocyclization for the synthesis of various O-, N-, and S-containing dihaloheterocycles has been developed. A wide range of the substituted propargyl alcohols having -OH, -NTs, and -SAc functional groups reacted with molecular iodine or bromoiodine at ambient temperature to produce the corresponding dihalogenated O-, N-, and S-containing five- and six-membered heterocycles in good to high yields; Under optimized solvent conditions, the reactions of various substituted but-2-yn-1-ones bearing -OH, -NTs, and -SAc functional groups at C4-position, with iodine or bromoiodine at ambient temperature afforded the corresponding 3,4-diiodo- and 3-bromo-4-iodo-substituted furans, pyrroles, and thiophenes in good to high yields. Further transformation of the resulting iodine- or bromine-containing products to polyaromatics potentially of useful as organo-material intermediates has been investigated. (C) 2011 Elsevier Ltd. All rights reserved.