Abstract
The stereo isomers, d- and l-phenyl propanolamine hydrochloride (nor-ephedrine) were stereo-selectively synthesized from benzaldehyde and nitroethane followed by catalytic reduction using hydrogen and Raney nickel. The nor-ephedrine was characterized by UV, IR, and LC/MS analysis. The purity of the synthesized nor-ephedrine hydrochlorides was analyzed using HPLC. Resolution of d- and l-isomer of PPA hydrochloride was carried out using the resolving agent, d-3-formyl-2,2,5,5-tetramethyl-1,3-thiazolidine-4-carboxylicacid. Optical rotation was found to be ±36°. The temperature and frequency dependence of dielectric constant, dielectric loss, and conductivity of d- and l-isomers of nor-ephedrine were studied over a range of frequency (50 Hz–5 MHz) and temperature (40–140 °C). It was found that d-isomer possesses higher dielectric constant and AC conductivity values compared to l-isomer. The band gap of 1.35 and 1.69 eV for d- and l-isomers, respectively, indicates that these two compounds behave as organic semiconductor materials.
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References
Nogradi M. Stereoselective synthesis: a practical approach. 2nd ed. New York: Wiley-VCH; 1995.
Bhushan R, Martens J, Arora M. Direct resolution of \((\pm )\)-ephedrine and atropine into their enantiomers by impregnated TLC. Biomed Chromatogr. 2001;15:151–4.
Drew CD, Knight GT, Hughes DT, Bush M. Comparison of the effects of d-(-)-ephedrine and l-(+)-pseudoephedrine on the cardiovascular and respiratory systems in man. J Clin Pharmacol. 1978;6:221–5.
Wilen SH, Collet A, Jacques J. Strategies in optical resolutions. Tetrahedron. 1976;33:2725–36.
Shao G, Wu F, Wang DS, Zhu R, Luo X. Quantitative analysis of l-ephedrine and d-pseudoephedrine in plasma by high-performance liquid chromatography with fluorescence detection. Acta Pharm Sin. 1995;30:384–9.
Kobayashi S, Endou M, Sakuraya F, Matsuda N, Zhang XH, Azuma M, Echigo N, Kemmotsu O, Hattori Y, Gando S. The sympathomimetic actions of l-ephedrine and d-pseudoephedrine: direct receptor activation or norepinephrine release? Anesth Analg. 2003;97:1239–45.
Jonscher AK. The universal dielectric response. Nature. 1977;267:673–9.
Porta M, Zumeta E. Implementing the Stockholm treaty on persistent organic pollutants. Occup Environ Med. 2002;59:651–2.
Health effects of PCBs. http://www.epa.gov/epawaste/hazard/tsd/pcbs/pubs/effects.htm. Accessed 02 Nov 2013.
Manske RHF, Johnson TB. Synthesis of ephedrine and structurally similar compounds. I. A new synthesis of ephedrine. J Org Chem. 1929;51:580–2.
Hoover FW, Hass HB. Synthesis of 2-amino-1-phenyl-1-propanol and its methylated derivatives. J Org Chem. 1947;12:506–9.
Jonas K. Synthesis of (1r*,2s*)-1-phenyl-2-nitropropanol. European Patent 960,876.
Lee HK, Kang S, Choi EB. Stereoselective synthesis of norephedrine and norpseudoephedrine by using asymmetric transfer hydrogenation accompanied by dynamic kinetic resolution. J Org Chem. 2013;77:5454–60.
Bhagavannarayana G, Ananthamurthy RV, Budakoti GC, Kumar B, Bartwal KS. A study of the effect of annealing on fe-doped LiNbO\(_3\) by HRXRD, XRT FT-IR. J Appl Crystallogr. 2005;38:768–71.
Dyer JR. Applications of absorption spectroscopy of organic compounds. New Delhi: Prentice Hall of India; 1989.
Nakamoto K. Infrared and Raman Spectra of inorganic and coordination compounds. 3rd ed. Hoboken: Wiley; 1978.
Boomadevi S, Mittal HP, Dhansekaran R. Synthesis, crystal growth characterization of 3-methyl 4-nitropyridine 1-oxide (POM) single crystals. Cryst Growth. 2004;261:55–62.
Meena M, Mahadevan CK. Growth and electrical characterization of l-arginine added KDP and ADP single crystals. Cryst Res Technol. 2008;43:166–72.
Kanagathara N, Anbalagan G. Growth, optical and dielectric studies on pure and l-Lysine doped KDP crystals. Int J Optics. 2012;2012:6.
Binitha MP, Pradyumnan PP. Thermal degradation, dielectric and magnetic studies on copper tartrate trihydrate crystals. J Therm Anal Calorim. 2013;114:665–9.
Suresh S, Ramanand A, Jayaraman D, Mani P, Anand K. Growth, optical, theoretical and dielectric studies on l-valine single crystals. Int J ChemTech Res. 2011;13:122–5.
Ortiz RP, Facchetti A, Marks TJ. High-k organic, inorganic, and hybrid dielectrics for low-voltage organic field-effect transistors. Chem Rev. 2010;110:205–39.
Hu X, Wang Z, Gao B, Shi Z, Kan H, Luo X, Tao W. Equivalent conductivity and its activation energy of \(\text{ NaF-AlF }_3\) melts. Trans Nonferr Metal Soc. 2009;19:719–23.
Mahamoud H, Louati B, Hlel F, Guidara K. Conductivity and dielectric studies on \((\text{Na}_{0.4}\,\text{Ag}_{0.6})_2\,\text{PbP}_2\text{O}_7\) compound. Bull Mater Sci. 2011;34:1069–75.
Rais D, Hain J, Pich A, Pochekailov S, Nespurek S, Adler HJP, Smacek A, Reboun J. Electrical conductivity in thin films fabricated from nanoparticles of a polymeric composite based on PEDOT. Mat Sci. 2009;27:769–80.
Indris S, Heitjans P, Ulrich M, Bunde A. AC and DC conductivity in nano and microcrystalline \(\text{Li}_2\text{O}\) a \(\text{B}_2\text{O}_3\) composites: experimental results and theoretical models. Phys Chem. 2005;219:89–103.
Vzquez H, Gao W, Flores F, Kahn A. Energy level alignment at organic heterojunctions: role of the charge neutrality level. Phys Rev B. 2005;71:1–4.
Stadler P, Track AM, Ullah M, Sitter H, Matt GJ, Koller G, Singh TB, Neugebauer H, Sariciftci NS, Ramsey MG. The role of the dielectric interface in organic transistors: a combined device and photoemission study. Org Electron. 2010;11:207–11.
Greiner MT, Helander MG, Tang WM, Wang ZB, Qiu J, Lu ZH. Universal energy-level alignment of molecules on metal oxides. Nat Mater. 2012;11:76–81.
Niu Y, Bai Y, Yu K, He L, Xiang F, Wang H. Fabrication, structure, and property of epoxy-based composites with metal insulator core shell structure fillers. J Mater Res. 2012;28:2644–9.
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The authors thank the Head of the Department of Physics, Loyola College, Chennai for providing facilities for conducting dielectric studies.
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Jeya Rajendran, A., Prabhu, M., Eswara Moorthi, K. et al. Dielectric and conductivity studies of stereo-selectively synthesized d- and l-nor-ephedrine. J Therm Anal Calorim 119, 369–379 (2015). https://doi.org/10.1007/s10973-014-4159-7
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DOI: https://doi.org/10.1007/s10973-014-4159-7