共查询到18条相似文献,搜索用时 78 毫秒
1.
2.
3.
4.
选择波长337 nm的激光作为激励光源,借助凝胶电泳研究了2-甲基-1,4-萘醌诱导的DNA光敏损伤.结果表明:在氧气饱和、脱氧条件下光敏损伤显著,DNA损伤主要与光子剂量、核酸与萘醌浓度比及DNA存在形式有关. 相似文献
5.
6.
8.
9.
10.
11.
Russian Journal of Organic Chemistry - An efficient procedure has been proposed for the synthesis of new 1,4-dioxo- and 1,4-dihydroxynaphthyl-substituted diphosphonium salts from... 相似文献
12.
13.
Khasiyatullina N. R. Islamov D. R. Mironov V. F. 《Russian Journal of General Chemistry》2019,89(11):2219-2223
Russian Journal of General Chemistry - It was shown that the direction of the reaction of 2-methyl-1,4-naphthoquinone with H-phosphonium salts obtained from diphenylphosphine and... 相似文献
14.
The synthesis of diverse 1,4‐dihydropyridines have been achieved via the multicomponent reactions of aldehydes, enaminones and amines. The reactions have been smoothly performed in water to provide all products with moderate to excellent yields by using lactic acid as a green catalyst. 相似文献
15.
L. I. Goryunov N. M. Troshkova G. A. Nevinskii V. D. Shteingarts 《Russian Journal of Organic Chemistry》2009,45(6):835-841
Potential biologically active derivatives of 2-aminopentafluoro-1,4-naphthoquinone modified at the amino group were synthesized in 32–96% yield by reactions of hexafluoro-1,4-naphthoquinone with nitrogen-centered nucleophiles. 相似文献
16.
Gornostaev L. M. Fominyh O. I. Lavrikova T. I. Khalyavina Yu. G. Gatilov Yu. V. Stashina G. A. 《Russian Chemical Bulletin》2019,68(1):86-91
Russian Chemical Bulletin - 1,4-Naphthoquinone and 5-hydroxy-1,4-naphthoquinone react with ninhydrin to give 2-(2-hydroxy-1,3-dioxo-2,3-dihydro-1H-inden-2-yl)naphthalene-1,4-dione and 8-hydroxy-... 相似文献
17.
Stephan Enthaler Bernhard Hagemann Giulia Erre Kathrin Junge Matthias Beller 《化学:亚洲杂志》2006,1(4):598-604
Iron complexes generated in situ catalyze homogeneously the transfer hydrogenation of aliphatic and aromatic ketones by utilizing 2‐propanol as a hydrogen donor in the presence of base. The influence of different reaction parameters on the catalytic activity is investigated in detail by applying a three‐component catalyst system composed of an iron salt, 2,2′:6′,2′′‐terpyridine, and PPh3. The scope and limitations of the described catalyst is shown in the reduction of 11 different ketones. In most cases, high conversion and excellent chemoselectivity are obtained. Mechanistic studies indicate a monohydride reaction pathway for the homogeneous iron catalyst. 相似文献
18.
《Tetrahedron》1988,44(2):591-598
Pyrex-filtered sunlight irradiation of solutions of 2-amino-1,4-naphthoquinone unexpectedly failed to produce cyclobutane dimers. Irradiation in acetic anhydride led to the formation of the trimeric 6-[3'-amino-2'-(1,4-naphthoquinonyl)]-dibenzo[b,h]carbazole-5,13:7,12-diquinone as well as 3,3'-diaraino-2,2'-bi-1,4-naphthoquinonyl and diben=zo[b,h]carbazole-5,13;7,12-diquinone. Similar treatment of 2-methyl=amino-1,4-naphthoquinone afforded 6-[3'-methylamino-2'-(1,4-naphthoqui=nonyl)]-dibenzo[b,h]carbazole-5,13:7,12-diquinone and 6-methyl-dibenzo=[b,h]carbazole-5,13:7,12-diquinone. 相似文献