New approach to the synthesis of dibenzodiazacrown ethers by ring transformation of dibenzocrown etherстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Opening of the macrocycle of 4',4 ''(5 '')-dinitrodibenzo-18-crown-6 ethers under the action of MeNH(2) or MeONa to give podands was studied. Structure of the aza podands was confirmed by X-ray diffraction. A new approach to the synthesis of previously unknown dinitrodibenzodiazacrown ethers based on one-step ring transformation of the cis isomer of dinitrodibenzo-18-crown-6 ether on treatment with aliphatic diamines was proposed. (C) 2011 Elsevier Ltd. All rights reserved.