فهرست مطالب

Iranian Journal of Chemistry and Chemical Engineering
Volume:9 Issue: 1, May-Jun 1990

  • تاریخ انتشار: 1369/06/25
  • تعداد عناوین: 11
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  • Page 1
  • Mahmoud Sharifi Moghadam Page 4
    The synthesis of some 9,10-disubstituted anthracene derivatives are described. 9, 10-Bis (2-bromoethyl) anthracene 4, 9, 10 Bis (2-cyanoethyl) anthracene 5 and 9, 10-Bis (4-hydroxybutyl) anthracent 11 are synthesized for the first time.
  • Morteza Ansarin Page 9
    Discoveri of 13c NMR and its application in the biosynthetic parthways prompted the synthesis of several 13C labeled precursors. To investigate the metabolism of phenyllactic acid in the solanacea family, the doyble labeled acid was synthesized from barium carbonate (13C) and sodium Syanide (13C) (Scheme 1)
  • Suleiman Afsharypour, G. Brine Lockwood Page 12
    Brassica napus L. and Sinapis alba L. are two crusiferous species for which some medicinal uses are mentioned in the Iranian, Indian and Chinese traditional medicine. Seed oil of B. napus has cathartic action, and is either used as such or after partial hydrogenation for cooking, shortening or as margarines. Seeds of S. alba have also cathartic action and some other medicinal uses but, necause of the recent reports of anticancer or cancer preventitive compounds in the crucifexae family, there is more interest in the nutritional value of crucifers. The anticancer activity of these plants is attributed to the presence of organic sulfur compounds namely the glucosinolates. These glucosides were identified through their volatile degradation products (i. e the aglucones), which are liberated after hydrolysis, using gas-liquid chromatography-mass spectrometry. Other volatile constituents, including some hydrocarbons and fatty acids were identified as well.
  • Gholam H. Hakimelahi, Ali R. Sardarian Page 19
    The synthesis of the title compound is described. Deprotection of cis (N-trityl-3-azido-4-styryl) – 2 – azetidinone to cis – (3 – azido – 4 – styryl) – 2 – azetidinone was found to be accelerated by the special salt effect under acidic condition.
  • Gholam H. Hakimelahi, Morteza Zarrinehzad Page 25
    The synthesis of cis-N-[a - carbobenzyloxy-b-(p-hydroxy-phenyl) ethyl] –3-phthalimido-4-styryl-2-azetidinone is described. We have found that the electron-rich Schiff bases can afford the cis-b-lactam ring even in the presence of the free hydroxyl functions. The mechanisms of cis and trans-b-lactam ring formation are discussed. The discussions are consistent with the recent publications.
  • Jabbar Khalafy, J. M. Bruce Page 35
    Several 10-substituted anthralins were readily prepared. Their oxidation with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone gave the corresponding novel heteroatomic systems. All derivatives were fully characterized by IR, Mass and 1HNMR Spectroscopy.
  • Mahmoud Moshfeghian, Mehran Monabbati, Ali R. Khoshkish Page 43
    A modification of Peng-Robinson equation is described wherein in the parameter b is expressed as a linear function of temperature. The modified equation is than applied to a series of light hydrocarbons and refrigerants, and predicted values for vapor pressure, saturated vapor volume, saturated liquid valume and the heat of evaporation are compared with the corresponding experimental data. Considerable improvement is clearly observed.
  • Mohsen Ghalamka Moazzam, Ahmad Shaabani Page 53
    Rearrangement of propargyl amine salt, in the presence of a base was studied and it was concluded that this occurs through an allenic intermediate.
  • Mohsen Ghalamkar Moazzam, Ahmad Shaabani Page 57
    The reaction between triethylamine with propargyl bromide was studied and the structure of triethyl propargyl ammonium bromide was illustrated by 1HNMR, IR, and mass spectra.
  • Mohammad A. Nabirahni Page 59
    Presently there are a number of fine and sensitive methods for determining chemical or biochemical substances among which bioelectrodes represents the most recent development. Bioelectrodes consist of biologically active materials (e. g enzyme, antibody, whole cell or cell fragments) held in close proximity to a suitable electrochemical transducer that sense specific electrodactive enzyme substrates or products. Considerable efforts are still in progress in order to improve the performance of these bioelectrodes and widen their applications. The present article describes some of the most frequently used immoblization techniques in producing such sensors, and reviews several parameters affecting their response. Finally a collection of current analytical applications is presented.