New (pyrimido[4,5-e][1,3,4]thiadiazin-7-yl)hydrazines were synthesized via the cyclocondensation of alkyl-2-phenylhydrazinecarbodithioates as bidentate nucleophiles with 5-bromo-2,4-dichloro-6-methylpyrimidine as an electrophile and further replacement of chlorine atom on the seven number position of pyrimido[4,5-e][1,3,4]thiadiazin by hydrazine in boiling ethanol.
Some new 3‐(alkylsulfanyl)‐7‐chloro‐1‐phenyl‐1H‐pyridazino [4,3‐e][1,3,4]thiadiazine were synthesized by treatment of the alkyl‐2‐phenylhydrazinecarbodithioates with 4‐bromo‐3,6‐dichloropyridazine in alkaline acetonitrile. Orientation of the reaction has been determined by X‐ray crystallography technique. The chlorine atom on the number 7 position of these products was replaced by secondary amines
通过用4-溴处理烷基-2-苯基肼碳二硫代酸酯,合成了一些新的3-(烷基硫烷基)-7-氯-1-苯基-1H-哒嗪[4,3- e ] [1,3,4]噻二嗪-3,6-二氯哒嗪在碱性乙腈中。反应的方向已通过X射线晶体学技术确定。在回流条件下,这些产物在7位的氯原子被仲胺取代。
Convenient synthesis of new pyrimido[4,5-e][1,3,4]thiadiazine derivatives
New 3-alkylsulfanyl-7-chloro-5-methyl-1-phenyl-1H-pyrimido[4,5-e][1,3,4]thiadiazines were synthesized via the cyclocondensation of alkyl-2-phenylhydrazinecarbodithioates with 5-bromo-2,4-dichloro-6-methylpyrimidine in basic acetonitrile.
Synthesis of Some New 3-Alkylthio Derivatives of 1-Phenyl-1H-[1, 3, 4]thiadiazino[5, 6-b]quinoxalines
作者:M. Bakavoli、M. Nikpour、M. Rahimizadeh
DOI:10.1080/104265090917844
日期:2005.10
The synthesis of some new 3-(alkylthio)-1-phenyl-1H-[1, 3, 4]thiadiazino[5, 6-b]quinoxalines4 have been achieved by cyclocondensation reaction of the alkyl-2-phenylhydrazinecarbodithioates 1 with 2,3-dichloroquinoxaline 2 in basic N,N-dimethylformamide.