Error message

  • Deprecated function: Unparenthesized `a ? b : c ? d : e` is deprecated. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)` in include_once() (line 1439 of /home/science2016/public_html/includes/bootstrap.inc).
  • Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 3557 of /home/science2016/public_html/includes/bootstrap.inc).
  • Deprecated function: Unparenthesized `a ? b : c ? d : e` is deprecated. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)` in include_once() (line 1439 of /home/science2016/public_html/includes/bootstrap.inc).
  • Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 3557 of /home/science2016/public_html/includes/bootstrap.inc).

Technological Aspects of Dicarboxylic Acids Esterification in the Presence of Aprotic Catalysts

Stepan Melnyk and Victor Reutskyy
Affiliation: 
Lviv Polytechnic National Univeristy 12, S. Bandery str., 7013 Lviv, Ukraine; st_melnyk@yahoo.com
DOI: 
https://doi.org/10.23939/chcht08.01.093
AttachmentSize
PDF icon full_text.pdf129.17 KB

Keywords:

Abstract: 
The investigation results of the regularities of diesters of aliphatic dicarboxylic acids obtained in the presence of aprotic catalysts – Lewis acids – have been generalized. The effect of catalysts (metal salts) nature and concentrations, reagents nature and ratio, water content in them, as well as the influence of reaction temperature on the technological characteristics of esterification process have been determined. The technological aspects of the process have been examined in the presence of aprotic acids. The investigated catalysts may be reused in the technological process.
References: 

[1] Barshteyn R., Kirilovich V. and Nosovskiy Yu.: Plastifikatory dlya Polimerov. Khimiya, Moskwa 1982.

[2] Svirskiy K., Kunakova R., Zaynullin R. and Dokichev V.: Bashk. Khim. Zh., 2010, 2, 162.

[3] Gang L. and Wenhui P.: Kinetika i Kataliz, 2010, 4, 583.

[4] Xiuhua H., Akihiro Y. and Joji N.: Tetrahedron Lett., 2004, 4, 781.

[5] Mantri K., Kenichi K. and Sugi Y.: Synthesis, 2005, 12, 1939.

[6] Finmans P. et. al: Pat. WO 2005/049556, Publ. Jun. 02, 2005.

[7] Melnyk S., Kachmar-Kos N., Melnyk Yu. and Reutskyy V.: Pat. UA 58200, Publ. Apr. 11, 2011.