Correction to Withdrawn Article[3,4] Cyclization Products of δ-Oxo-α,β-unsaturated Ketoxime During Reaction with Hydrochloric Acid in Anhydrous Diethyl Ether
作者:Cornelia Uncuta、Adriana Tudose、Miron T. Caproiu、Silvia Udrea、Christian Roussel
DOI:10.1002/ejoc.200210534
日期:2003.5
(2). We have previously claimed the formation of a stable 3,5,5-trisubstituted 3-isoxazolidinol and of a bridged bicycle 4,5-dihydro-2,5-methano-1,4,3-dioxazepine in the reaction of 2 with hydrochloric acid in anhydrous diethyl ether. We report in this article that the above compounds are actually 3,3-dimethyl-1-(5′-tert-butyl-5′-hydroxy-3′-methylisoxazolidin-3′-yl)butan-2-one (5) and 1,3-di-tert-butyl-5-methyl-2
我们研究了 (4Z)-2,2,5,8,8-pentamethyl-4-nonene-3,7-dione (3E)-oxime (2) 的环化。我们之前曾声称在 2 与盐酸反应中形成稳定的 3,5,5-三取代 3-异恶唑烷醇和桥连双环 4,5-dihydro-2,5-methano-1,4,3-dioxazepine无水乙醚中的酸。我们在这篇文章中报道,上述化合物实际上是 3,3-二甲基-1-(5'-叔丁基-5'-羟基-3'-甲基异恶唑烷-3'-基)butan-2-one (5)和 1,3-二叔丁基-5-甲基-2,7-二氧杂-6-氮杂双环[3.2.1]辛-3-烯(6)。这些产物的形成涉及将羟胺分解为 2 并在酸性反应条件下将其重新添加为 O-亲核试剂。令人惊讶的是,5在室温下加热或在CDCl 3 /TFA溶液中静置时提供2-异恶唑啉衍生物3。(© Wiley-VCH Verlag GmbH