Synthesis of phenanthro[9, 10-d]oxazoles from 10-(methoxyimino)phenanthrene-9-one
作者:Demetrios N. Nicolaides、Evangelia A. Varella、R. Wajih Awad
DOI:10.1016/s0040-4020(01)87251-3
日期:1993.8
10-(Methoxyimino)phenanthren-9-one 3 easily reacts with the methyl substituted aromatics 4(a-d), as well as with alpha-bromo-p-xylene 6 and the alpha-substituted methyl derivatives 7(a-i), to afford in 5-64% yield the corresponding 2-aryl substituted phenanthro[9,10-d]oxazoles 5(a-g), most probably via a free radical reaction sequence. In several cases the unsubstituted oxazole 12 is also obtained, while reaction of compound 3 with the N-methyl substituted amines 7g and 14(ab) leads to the aminooxazoles 13 and 15(a,b) respectively.