排序方式: 共有5条查询结果,搜索用时 93 毫秒
1
1.
E. V. Kalita D. G. Kim O. S. Yeltsov T. S. Shtukina 《Russian Journal of Organic Chemistry》2016,52(8):1148-1153
Alkylation of 5-nitro-2-pyridone by alkenyl halides in acetone in the presence of K2СО3 proceeds with generation of a mixture of N- and О-derivatives with N-isomer prevailing. 1-Allyl- and 1-methylallyl-5-nitro-2-pyridone react with halogens with the formation of 2-halomethyl-6-nitro-2,3-dihydrooxazolo[3,2-a]-pyridinium halides. 1-Prenyl-5-nitro-2-pyridone reacts with bromine with the formation of 3-bromine-2,2-dimethyl-7-nitro-3,4-dihydro-2Н-pyrido[2,1-b][1,3]oxazinium bromide, and with iodine giving 2,2-dimethyl-7-nitro-3,4-dihydro-2Н-pyrido[2,1-b][1,3]oxazinium triiodide. 相似文献
2.
Petrova K. Yu. Kim D. G. Sharutin V. V. Eltsov O. S. Shtukina T. S. Anuchin A. A. 《Russian Journal of General Chemistry》2019,89(11):2201-2206
Russian Journal of General Chemistry - Alkylation of 8-chlorotheophylline by alkenyl(propargyl) halides yields 7-alkenyl(propargyl)-8-chlorotheophyllines. The reaction of 8-chlorotheophylline with... 相似文献
3.
4.
Zyryanov G. V. Rusinov V. L. Chupakhin O. N. Krasnov V. P. Levit G. L. Kodess M. I. Shtukina T. S. 《Russian Chemical Bulletin》2004,53(6):1290-1294
The reaction of 3-phenyl-1,2,4-triazin-5(4H)-one (1) with l-menthol in the presence of aliphatic acid anhydrides results in (6S)- and (6R)-1-acyl-6-(l-menth-3-yl)-1,6-dyhydro-3-phenyl-1,2,4-triazin-5(4H)-ones. The reaction is diastereoselective with predominant formation of (6S)-isomers. The reaction diastereoselectivity increases with enhancement of the steric hindrance in the vicinity of the reaction center of the azine. 相似文献
5.
N. M. Tarasova D. G. Kim O. S. El’tsov T. S. Shtukina A. E. Borisova 《Russian Journal of Organic Chemistry》2018,54(3):469-474
Reactions of 2-(propargylsulfanyl)-5-methyl-1,3,4-thiadiazole, N-[5-(propargylsulfanyl)-1,3,4-thiadiazol- 2-yl]benzamide, 2-(propargylsulfanyl)-1,3-benzothiazole, and 2-(propargylsulfanyl)-4,5-dihydro-1,3- thiazole with iodine involved annulation of the unsaturated substituent with formation of fused thiazole ring. 2(5)-(Propargylsulfanyl)-1,3,4-thiadiazole derivatives reacted with bromine to give mixtures of heterocyclization products and bromine adducts to the triple bond. The bromination of 2-(propargylsulfanyl)-4,5-dihydro- 1,3-thiazole afforded only the bromine addition product to the triple bond. 相似文献
1