在FSO 3 H / SO 2 ClF中通过低温质子化作用,由异构的单烷基化和二烷基化的苯并[ a ]蒽(BAs)生成了一系列新型的碳正离子化反应。C-7具有单烷基衍生物(5-甲基,6-甲基,7-甲基和7-乙基)以及D环甲基化类似物(9-甲基,10-甲基和11-甲基),或在所有情况下均观察到C-12质子化的碳正离子(作为唯一或主要的碳正离子)。12-甲基衍生物的质子化(9)得到C-7质子化的碳正离子(9H +)作为动能种类和本位-protonated碳阳离子(9AH +)作为热力学阳离子。与12-乙基衍生物(10),在箱式区域空间张力的浮雕大大有利于本位-protonation(10AH +)。具有3,9-二甲基(14),C-7质子化(14H +)(C-12质子化<10%)受到强烈青睐,在1,12-二甲基(15)的情况下,观察到的唯一物质是C-7质子化的碳正离子化(15H +)。对于7-甲
1:2-Benzanthracene and the 3′-methyl derivative have been prepared by Raney nickel reduction of the sulphuric esters of the leuco derivatives of 1:2-benzanthraquinone and 4′-chloro-3′-methyl-1:2-benzanthraquinone, followed by dehydrogenation. 3-Hydroxy-1:2-benzanthraquinone was methylated in the 4-position by formaldehyde, sodium hydrosulphite and sodium hydroxide solution (the Marschalk reaction)
A new abbreviated synthesis of 5-methylchrysene and its 2-hydroxy- and 8-hydroxy derivatives
作者:Subodh Kumar
DOI:10.1016/0040-4039(96)01393-7
日期:1996.8
The Suzuki reaction has been applied to provide a highly abbreviated synthesis of 5-methylchrysene and its 2-hydroxy- and 8-hydroxy derivatives from easily accessible starting materials.
378. Polycyclic aromatic hydrocarbons. Part XII. The orientation of derivatives of 1 : 2-benzanthracene, with notes on the preparation of some new homologues, and on the isolation of 3 : 4 : 5 : 6-dibenzphenanthrene
作者:J. W. Cook
DOI:10.1039/jr9330001592
日期:——
Mukherji,S.M. et al., Indian Journal of Chemistry, 1970, vol. 8, p. 683 - 686
作者:Mukherji,S.M. et al.
DOI:——
日期:——
Coördination of Polycyclic Aromatic Hydrocarbons with Silver Ion; Correlation of Equilibrium Constants with Relative Carcinogenic Potencies<sup>1</sup>