Diquinones II the formation of dibenzofuran derivatives by rearrangement of diquinones
作者:A.J. Shand、R.H. Thomson
DOI:10.1016/0040-4020(63)85007-3
日期:1963.1
Several diquinones (I, III, V) undergo photochemical and/or thermal rearrangement to dibenzofuranquinones (II, IV, VI). Structure IV has been established by synthesis and unambiguous structures have been assigned to several of its isomers.
Transpositions d'hydroxy-diquinones I. Pr�paration de l'hydroxy-2-dim�thyl-4,4? -diquinone-3,6,3?,6? et du penta-hydroxy-2,3,6,3?,6?-dim�thoxy-4,4? -diph�nyle
作者:Th. Posternak、W. Alcalay、R. Huguenin
DOI:10.1002/hlca.19560390614
日期:——
Les préparations del'hydroxy-2-diméthyl-4,4′-diquinone-3,6,3′,(XIV) etdupenta-hydroxy-2,3,6,3′, 6′-dimythoxy-4,4′-diphényle (XXVIII) ont été décrites.
been assigned to the diacetate of the product obtained by addition of hydrogen chloride to 4,4′-dimethoxy-2,5,2′,5′-biquinone, in the cold, mainly on the basis of its 13C NMR spectrum. The structures of a number of halogenodibenzofurans derived from this biquinone, and from the corresponding dimethylbiquinone, by reaction with hydrogenhalide have also been determined.
二烯酮结构(12; R = Ac)已分配给产品的二乙酸盐,该产品是通过在寒冷条件下将氯化氢添加到4,4'-二甲氧基-2,5,2',5'-联苯醌中而获得的根据其13 C NMR光谱。还已经确定了通过与卤化氢反应而衍生自该联醌和相应的二甲基联醌的许多卤代二苯并呋喃的结构。
Erdtman, Proceedings of the Royal Society of London, Series A: Mathematical, Physical and Engineering Sciences, 1934, vol. 143, p. 196,197
作者:Erdtman
DOI:——
日期:——
Erdtman, Svensk Kemisk Tidskrift, 1932, vol. 44, p. 135,143, 147