Russian Journal of General Chemistry p. 2150 - 2161 (2007)
Update date:2022-07-31
Topics:
Yuskovets
Ivin
Kirillova
Readily accessible 5-acetyl-4-hydroxy-3,6-dihydro-2H-1,3-thiazine-2,6-dione reacts with substituted hydrazines and carboxylic acid hydrazides under mild conditions to give the corresponding hydrazones. Under severe conditions (heating in boiling dimethylformamide) the reaction is accompanied by extrusion of COS with formation of substituted 1-amino-6-methyluracils. Reactions of 5-acetyl-4-hydroxy-3,6-dihydro-2H-1,3-thiazine-2,6-dione with monosubstituted alkyl-and arylhydrazines take different pathways, depending on the conditions. Heating of equimolar mixtures of the reactants in ethanol or propan-1-ol leads to the formation of 2-substituted 5-methyl-3-oxo-2,3-dihydro-1H-pyrazole-4- carboxamides rather than 1-amino-6-methyluracil derivatives.
View MoreLIAOYANG WANRONG CHEMICALS COMPANY LIMITED
Contact:86-419-2390789
Address:XINLI VILLAGE , DONG NINGWEI COUNTY,TAIZIHE DISTRICT, LIAOYANG , LIAONING
shandong lukang animal & plant drug trading co.,ltd.
Contact:15853765968
Address:floor 9, lukang ,jingying building,#173,taibai building west road,jining city,shandong,china
Shanghai Yuantai Chemical Products Co., Ltd
Contact:021--66129803
Address:Chengyin Road,Shanghai,China
SuZhou Bichal Biological Technology CO.,LTD
Contact:+86-512-68051130
Address:NO.32 huoju road HI-TECH Industrial development zone SuZhou China
Jiangxi Huashi Pharmaceutical Co., Ltd
Contact:+86-795-4509628
Address:Ningbo Ave., Fengtian Industrial Park, Fengxin Country, Jiangxi, China.
Doi:10.1021/ja00249a068
(1987)Doi:10.1016/j.tetasy.2015.09.006
(2015)Doi:10.1002/anie.200802253
(2008)Doi:10.1080/00397910802028481
(2008)Doi:10.1039/c3ob42332h
(2014)Doi:10.1016/j.saa.2010.06.041
(2010)