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首页> 外文期刊>Heterocycles: An International Journal for Reviews and Communications in Heterocyclic Chemistry >EFFECT OF SUBSTITUENTS AT 1,4-POSITIONS OF POLYCYCLIC AROMATIC COMPOUNDS,- AND PREPARATION OF 2,3-DIFUNCTIONALIZED PENTACENES AND NAPHTHACENES
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EFFECT OF SUBSTITUENTS AT 1,4-POSITIONS OF POLYCYCLIC AROMATIC COMPOUNDS,- AND PREPARATION OF 2,3-DIFUNCTIONALIZED PENTACENES AND NAPHTHACENES

机译：取代基在多环芳族化合物1，，4-位置上的作用-以及2,3-官能化戊烯和萘的制备

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摘要

Effects of substituents at 1,4-positions of polycyclic aromatic compounds were investigated in the case of reduction of 2,3-bis(alkoxycarbonyl)arenes with the LiAlH4/AlCl3 system.2,3-Bis(alkoxycarbonyl)dihydronaphthacenes and dihydropentacenes 1 were treated with a mixture of LiAlH4 and AlCl3.The products were dependent on the substituents at 1,4-positions.Similar type of influence of the substituents at 1,4-positions was observed in the oxidation of diols 2 to dialdehydes 4.Without substituents at 1,4-positions,dialdehydes 4 were conveniently obtained.However,with substituents at 1,4-positions,dialdehydes 4 were not obtained.Instead,l,3-dihydroisobenzofuran-l,3-diol or 1,3-dihydroisobenzofuran-l-ol derivatives 5,6 were obtained in good yields.Preparation of pentacene imides and pentacene carboxylic acid anhydride was also reported.
机译：用LiAlH4 / AlCl3体系还原2,3-双（烷氧基羰基）芳烃时，研究了多环芳族化合物1,4-位上取代基的影响.2,3-双（烷氧基羰基）二氢萘并二氢化戊并1用LiAlH4和AlCl3的混合物处理后，产物取决于1,4-位上的取代基在二元醇2氧化为二醛4时，在1,4-位上观察到类似的取代基影响类型，没有取代基在1，4-位上，可以方便地获得二醛4。但是，在1，4-位上具有取代基的情况下，不能得到二醛4。相反，1，3-二氢异苯并呋喃-1，3-二醇或1，3-二氢异苯并呋喃-以良好的产率获得了1-ol衍生物5，6。还报道了并五苯二甲酰亚胺和并五苯甲酸酐的制备。

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