Asian Journal of Research in Chemistry

Kussum Sharma ¹, Monika Rangi ²

Affiliations
1 Department of Chemistry, Maharaja Agarsen Institute of Technology, Delhi, IN
2 Department of Chemistry, International Institute of Technology and Business, Sonipat, IN

Abstract

A novel Ca²⁺-selective membrane sensor based on Pyrole-2-carboxaldehyde-semicarbazide (PCASC) was prepared. The plasticized membrane sensor based on Pyrole-2-carboxaldehyde-semicarbazide (PCASC) exhibits a Nerstian response for Ca²⁺ ions over a relatively wide concentration range with a limit of detection of 1.0 x 10^-8 M. It has a fast response time of <10 s and can be used for at least weeks without observing any major deviation. The sensor revealed very good selectivity with respect to diverse ions. The response of the proposed sensor is independent on pH in the range 3.0 to 10.5. It was used as indicator electrode and also used for pollution monitoring, agriculture and industrial wastage.

Keywords

Ca²⁺, Ion-Selective Electrode, PVC Membrane, Potentiometry.

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Kussum Sharma ¹, Monika Rangi ²

Affiliations
1 Department of Chemistry, Maharaja Agarsen Institute of Technology, Delhi, IN
2 Department of Chemistry, International Institute of Technology and Business, Sonipat, IN

Abstract

Diaryl heptanoid based ketene dithioacetals have been synthesized in good yield by the condensation of aromatic aldehyde or substituted aromatic aldehyde and acetone ketene dithioacetals in the presence of methanolic potassium hydroxide, 3,4-dihydro-2H-pyran, PPTS as a catalyst under room temperature conditions. It is the first successful report of utility of potassium hydroxide as a base for the preparation of series of ketene. μ-oxo ketene dithioacetals have been extensively used as the anti-leishmanial agent. The remarkable advantages offered by this method are excellent catalyst, mild reaction conditions, simple procedure and good yield of product.

Keywords

Acetone Ketene Dithioacetals, Potassium Hydroxide, Diaryl Heptanoid Based Ketene, μ-Oxo Ketene Dithioacetals, Anti-Leishmanial Agent.

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