O-Oximes were dilithiated in excess lithium diisopropylamide, and the resulting intermediates were condensed with lithiated hydroxyphenyl aldehydes and related materials and cyclized with acid to afford 2-[4,5-dihydro-3-aryl-5-isoxazolyl]phenols, substituted 4,5-dihydroisoxazoles (2-isoxazolines).
摘要 C(a)、O-
肟在过量的
二异丙基氨基
锂中二
锂化,所得中间体与
锂化的羟基苯醛和相关材料缩合,并用酸环化得到2-[4,5-二氢-3-芳基-5-
异恶唑基]
苯酚,取代的 4,5-二氢
异恶唑(2-
异恶唑啉)。