- Reactions of 3-Hydrazino-5,6-diphenyl-1,2,4-triazine with α,β-Bifunctional Compounds
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Acylation of 3-hydrazino-5,6-diphenyl-1,2,4-triazine (I) with various α,β-bifunctional compounds such as ethyl chloroformate, ethyl bromoacetate, ethyl cyanoacetate, ethyl acetoacetate, monochloroacetic acid, cinnamoyl chloride, α-bromoacetylbromide, succ
- Zaher, H. A.,Abdel-Rahman, R. M.,Abdel-Halim, A. M.
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p. 110 - 115
(2007/10/02)
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- Studies on Heterocyclic Compounds. Part VI: Synthesis of Bridgehead Nitrogen Triazine and Pyrimidine Heterocycles
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New bridgehead nitrogen containing heterocycles such as thiazolotriazine (IVa and IVb), imidazolotriazine (IVc), triazinotriazine (IVd and IVe) and oxadiazolotriazine (IVf) and several of their derivatives (V) have been prepared by reacting their respective hydrazine (II) with ethylpyruvate and phenyl glycoxalic acid.The diazotization of hydrazine (II) furnished the reactive intermediates (VI) (azido form) and (VII) (tetrazole form) depending on the structure of hydrazines.These intermediates have been used to synthesise bridgehead nitrogen pyrimidine derivatives (VIII) by reacting them with diethyl fumarate.The spectral and chemical evidences show that diazotised products obtained from 2-hydrazino-4-phenyl thiazole (IIa) and 2-hydrazino benzothiazole (IIb) exist in tetrazole form (VIIa) and (VIIb), respectively, whereas the remaining four (IIa-IIf) remain in the azido form (VIc-VIf) in the solid state.
- Dehuri, S. N.,Pradhan, P. C.,Nayak, A.
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p. 475 - 478
(2007/10/02)
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