Browsing by Author "Pramod K. Srivastava"

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Electrochemical synthesis of tetraphenylborate doped polypyrrole and its applications in designing a novel zinc and potassium ion sensor
(Wiley-VCH Verlag, 2002) Prem C. Pandey; Govind Singh; Pramod K. Srivastava
The electrochemical synthesis of tetraphenylborate (TPB) ion doped polypyrrole is reported. The electrochemical polymerization of ion exchanger doped polypyrrole is carried out in dry acetonitrile. The polypyrrole synthesized under present conditions is characterized by scanning electron microscopy and cyclic voltammetry. The applications of new ion exchanger doped polypyrrole in the development of solid-state ion sensors are reported. The ion sensing properties and construction of new conducting polymer based Zn++ ion and potassium ion sensors are described. The Zn++ ion sensor is developed by TPB doped polymer modified electrode itself whereas K+ ion sensor is developed by laying down of another layer of dibenzo-18-crown-6 impregnated plasticized Polyvinylchloride (PVC) matrix membrane. The response curve on Zn++ ion sensing with and without polymer layer is also studied and reported. An effort on selective sensing of Zn++ ion is also made and the data on Ni++, Co++, Pb++, and Mg++ ions are reported using polymer modified electrode. Similarly the effect of Na+ and NH4+ ions on the response of K+ ion sensing is also reported. The contribution of tetraphenylborate in designing these ions sensors are discussed.
New Compounds: Potential Antituberculous Agents. 2. N-Arylformamidino-N′-(dialkyl and diaryl substituted)thiosemicarbazones
(1976) Pramod K. Srivastava; Jugmander S. Upadhyaya; Rajesh D. Sharma
Various N-arylformamidino-N′-dimethylthiosemicarbazones and N-arylformamidino-N′-diphenylthiosemicarbazones have been synthesized by the condensation of corresponding arylcyanamides with 1-substituted thiosemicarbazones. The intermediates required in these syntheses were prepared according to the methods given in the literature. © 1976, American Chemical Society. All rights reserved.
Potential Antithyroid Agents. 1. N-Alkylformamidino-N-arylthiocarbamide Hydrochlorides
(1979) Pramod K. Srivastava; Harendra D. Mishra; Madhu Bala Gupta
Various N-alkylformamidino-A/-arylthiocarbamide hydrochlorides have been synthesized by the condensation of corresponding arylcyanamides with 1-substituted alkylthiocarbamldes in the presence of HCI gas. The intermediates required in these syntheses were prepared according to the methods given in the literature. © 1979, American Chemical Society. All rights reserved.
Potential Antituberculous Agents. 3.N-Aryl-N′-2-(4-phenyl-5-arylazothiazolyl)thiocarbamides
(1976) Pramod K. Srivastava; Jugmander S. Upadhyaya; Rajesh D. Sharma
Various N-aryl-N′-2-(4-phenyl-5-arylazothiazolyl)thiocarbamides have been synthesized by the condensation of corresponding 2-amino-4-phenyl-5-arylazothiazoles with different arylisothiocyanates. The intermediates required in these syntheses were prepared according to the methods given in the literature. © 1976, American Chemical Society. All rights reserved.
SYNTHESIS AND POTENTIAL LOCAL ANAESTHETIC ACTIVITY OF SOME 2-SUBSTITUTED THIAZOLES AND BENZIMIDAZOLES
(Indian Academy of Sciences, 1979) Pramod K. Srivastava; Shri Krishna Rai; G.S. Yadav
The present communication deals with the synthesis and characteristics of alkylarylamino-acetyl-2-arninothiazoles and benzimidazoles. The results of preliminary testing of local anaesthetic activity are also reported here. © (1979), (Indian Academy of Sciences). All Rights Reserved.
Synthesis of 1-Aryl-2-hydrazino-4-phenyl-1,6-dihydro-1,3,5-triazine-6-thiones and Related Thiosemicarbazides
(1990) Suresh K. Mishra; Pramod K. Srivastava
Different 1-aryl-2-(benzylthio)-4-phenyl-1,6-dihydro-1,3,5-triazine-6-thiones have been synthesized by known methods. These trlazlnes on treatment with hydrazine hydrate under suitable conditions afforded corresponding hydrazino derivatives. 1-Aryl-2-hydrazino-4-phenyl-1,6-dihydro-1,3,5-triazine-6-thione on interaction with aryl/alkyl isothiocyanates gave related thiosemicarbazides. © 1990, American Chemical Society. All rights reserved.
Synthesis of S-((Arylamino)formimidoyl)-2-thiobarbituric Acid Hydrochloride Antituberculous Agents
(1985) Pramod K. Srivastava; Usha K. Tiwari
Various S -((arylamino)formimidoyl)-2-thlobarbituric acid hydrochlorides have been synthesized by the condensation of corresponding arylcyanamides with 2-thlobarbituric acid and 1-substituted-2-thlobarbituric acids. Precursors required In these syntheses were prepared by already known methods. © 1985, American Chemical Society. All rights reserved.