本文合成了一系列新型的含氮杂环螺恶嗪衍生物,并通过1 H NMR,13 C NMR,IR和HRMS进行了表征,并研究了该化合物在不同溶液中的光致变色行为,并将其包埋在环烷中。聚(甲基丙烯酸甲酯)和聚乙烯醇缩丁醛基质(PMMA,PVB)。在溶液中,它们显示出热致变色和酸致变色。嵌入聚合物薄膜中,化合物热脱色的光致变色动力学发生了显着变化,发现脱色曲线符合双指数函数。详细研究表明,代表性化合物1 [1,3,3-三甲基-6'-哌啶子基-螺(吲哚啉-2,3'-[3 H]-喹啉基[2,1- b ] [1,4]恶嗪)在聚甲基丙烯酸甲酯和聚乙烯醇缩丁醛基体中表现出较高的抗疲劳性。
Metal-Free Sequential C(sp<sup>2</sup>)–H/OH and C(sp<sup>3</sup>)–H Aminations of Nitrosoarenes and <i>N</i>-Heterocycles to Ring-Fused Imidazoles
作者:Anisha Purkait、Subhra Kanti Roy、Hemant Kumar Srivastava、Chandan K. Jana
DOI:10.1021/acs.orglett.7b00832
日期:2017.5.19
Hydrogen bond assisted ortho-selective C(sp2)–Hamination of nitrosoarenes and subsequent α-C(sp3)-H functionalization of aliphatic amines is achieved under metal-free conditions. The annulation of nitrosoarenes and 2-hydroxy-C-nitroso compounds with N-heterocycles provides a facile excess to a wide range of biologically relevant ring-fused benzimidazoles and structurally novel polycyclic imidazoles
氢键辅助的亚硝基芳烃的邻位选择性C(sp 2)-H氨基化和随后的α-C(sp 3)-H脂肪族胺的官能化在无金属条件下实现。亚硝基芳烃和2-羟基-C-亚硝基化合物与N-杂环的环化分别提供了相对于广泛的生物学相关的环稠合的苯并咪唑和结构上新颖的多环咪唑的简便过量。发现在卤代亚硝基芳烃的C(sp 2)–H胺化过程中,亲核芳香族氢取代(S N ArH)比经典S N Ar反应更可取。
characterized by spectroscopic methods (1H NMR, 13C NMR, HRMS, and single-crystal X-ray diffraction). The structural features of compound 2, 4, 5 and 6 were analyzed through the packing diagrams. The results indicated that the skeleton of all the molecules fused an oxazine ring to an indoline fragment in near-orthogonal arrangement. Furthermore, the 3D supermolecular frameworks were formed by the hydrogen
Novel Derivatives of Adamantyl-substituted Quinolin-6-amines and Synthesis of Imidazo[4,5-f]quinolines Therefrom
作者:A. A. Abramov、M. V. Kulagina、N. A. Gavrilova、E. S. Semichenko、A. A. Kondrasenko、G. A. Suboch
DOI:10.1134/s1070428019080256
日期:2019.8
with hydrazine hydrate over Pd/C to N6-[(adamantan-1-yl)alkyl]quinoline-5,6-diamines. The latter were heated in formic acid to obtain previously unknown 3-[(adamantan-1-yl)alkyl]-3H-imidazo[4,5-f]quinolines.
N-(金刚烷-1-基)烷基取代的5-亚硝基喹啉-6-胺是通过用伯N -[(金刚烷-1-基)烷基]胺化5-亚硝基喹啉-6-醇而首次合成的。胺类。用水合肼在Pd / C上将所得的亚硝基喹啉胺还原成N 6 -[((金刚烷基-1-基)烷基]烷基]喹啉-5,6-二胺。将后者在甲酸中加热以获得先前未知的3-[((金刚烷-1-基)烷基] -3] H-咪唑并[4,5- f ]喹啉。
Photochromic compound and articles containing the same
申请人:PPG Industries, Inc.
公开号:US04792224A1
公开(公告)日:1988-12-20
Described are photochromic spiro (oxazolidine) substituted benzoxazine photochromic compounds and their use in plastic hosts to impart a photochromic response thereto. More particularly, there are described spiro (oxazolidine) pyrido benzoxazine and spiro (oxazolidine) naphthoxazine compounds and their use in substrates such as polymerizates of allyl digylcol carbonate.