关于我们一般合成多环杂芳族化合物的机理方面的研究表明,遵循方案2中概述的反应序列。在我们的合成条件下,邻位重排(8)→(9)优于已知在酸性条件下发生的对位重排。在分子间反应中,苯胺曼尼希碱(29)被转化为苯并[ a ] r啶(30)。合成似乎仅限于推定的中间体(9)不属于酰胺基团的底物。在这些研究过程中,已经发现了三环化合物(24)和(25)的有效合成。
Studies of chelation. Part 9. Cobalt complexes of 1-[(substituted phenyl)azo]-2-naphthol and 1-[(substituted phenylimino)methyl]-2-naphthol ligands. Tautomerism and reactivity
作者:Joseph A. Connor、David J. Fine、Raymond Price
DOI:10.1039/dt9810000559
日期:——
naphthalene rings is a critical feature of the chelation process. The formation of [Co(R-az)3] from [Co(R-az)2] and from [Co(R-Haz)2X2] in the presence of air occurs easily and is acid catalysed. [Co(R-sb)3] is formed only under vigorously oxidising conditions. The isoelectronic ligands R-Haz and R-Hsb should not be regarded as identical in their reactivity towards cobalt(II).
光谱表征(1 H和13 C NMR,IR,拉曼光谱,和UV-可见光)的各种1 - [(取代的苯基)偶氮] -2-萘酚,R-哈兹(R = 4'--ME,4'- OMe,4'-Cl,H,2'-OMe,2'-Me,2'-Cl和2'-Br)和1-[(取代的苯基亚氨基)甲基] -2-萘,R-Hsb( R = 4'- OME,4'--ME,4'-氯,H,4'-BR,4'-CF 3,4'-CN,4'- NO 2,2'-OME,2'-ME ,2'-CHME 2,2'-氯,2'- CN,和2'-NO 2),在固体状态下和在极性和非极性溶剂中的溶液表明,氢键酮互变异构体在极性溶剂中占主导地位。钴(II)盐与R-Haz和R-Hsb在乙醇中反应生成[CoL 2 ],顺式-[Co(HL)2 X 2 ]和fac- [CoL 3 ](L = R-az或R-sb)。这些配合物中的配体的互变异构形式是通过振动光谱法建立的,在[Co(R-az)2
A general and practicable synthesis of polycyclic heteroaromatic compounds. Part 4. A rationale for the mechanism of the synthesis
作者:Janet L. Asherson、Orhan Bilgic、Douglas W. Young
DOI:10.1039/p19810003041
日期:——
para-rearrangement which is known to occur in acid conditions. Aniline Mannich bases (29) are converted to benz[a]acridines (30) in an intermolecular reaction. The synthesis appears to be restricted to substrates where the putative intermediate (9) is not part of an amide group. In the course of these studies effective syntheses of the tricyclic compounds (24) and (25) have been discovered.
关于我们一般合成多环杂芳族化合物的机理方面的研究表明,遵循方案2中概述的反应序列。在我们的合成条件下,邻位重排(8)→(9)优于已知在酸性条件下发生的对位重排。在分子间反应中,苯胺曼尼希碱(29)被转化为苯并[ a ] r啶(30)。合成似乎仅限于推定的中间体(9)不属于酰胺基团的底物。在这些研究过程中,已经发现了三环化合物(24)和(25)的有效合成。
In the crystal structure of the title compound, [Zn(C18H14NO2) (2)] center dot C2H6O, the Zn atom displays a highly distorted octahedral coordination involving the O and N atoms of two molecules of the Schiff base 1-[N-(2-methoxyphenyl) iminomethyl] naphthalen-2(1H)-one, which acts as an O, N, O'-tridentate ligand. The ethanol molecule is bound to the methoxy group of one ligand molecule via a hydrogen bond.