Intramolecular dehydration of L-glutamic acid
Intramolekulska dehidratacija L-glutaminske kiseline
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Метаподаци
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A number of various thermal dehydrations of L-glutamic acid were performed in order to obtain crude L-pyroglutamic acid. Some old procedures and some new ones were investigated. Also, a great deal of work was done on the purification of crude L-pyroglutamic acid. We can say that among other very good procedures for synthesis and purification we can count our own, modified synthesis in aqueous solution of L-glutamic acid (acid: water = 1:3) and recrystallization from ethanol. The most efficient purification was carried out on ion-exchange resins (Dowex, Amberlite). Some new systems for TLC of L-glutamic acid and L-pyroglutamic acid were also examined .
Pošto do sada još nije u potpunosti rešen postupak sinteze i ekonomičnog prečišćavanja L-piroglutaminske kiseline, izvršili smo ispitivanje različitih postupaka termičke intramolekulske dehidratacije L-glutaminske kiseline, kao i prečišćavanje dobijene sirove L-piroglutaminske kiseline u cilju dobijanja proizvoda većeg stepena čistoće. Uporedno si ispitivani i raniji poznati postupci i poređeni sa našim novim postupcima. Na osnovu naših rezultata može se zaključiti da je naročito pogodna sinteza iz vodenog rastvora L-glutaminske kiseline (1 deo kiseline i 3 dela vode) i prekristalisavanje sirovog produkta iz etanola. Najefikasnije prečišćavanje izvodi se pomoću jonoizmenjivačkih smola (Dowex, Amberlite).
Извор:
J. Serb. Chem. Soc., 1989, 54, 1, 11-15Издавач:
- Srpsko hemijsko društvo
Финансирање / пројекти:
- Research fund of SR Serbia
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Mijin, Dušan AU - Petrović, S. AU - Stojanović, O. PY - 1989 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5124 AB - A number of various thermal dehydrations of L-glutamic acid were performed in order to obtain crude L-pyroglutamic acid. Some old procedures and some new ones were investigated. Also, a great deal of work was done on the purification of crude L-pyroglutamic acid. We can say that among other very good procedures for synthesis and purification we can count our own, modified synthesis in aqueous solution of L-glutamic acid (acid: water = 1:3) and recrystallization from ethanol. The most efficient purification was carried out on ion-exchange resins (Dowex, Amberlite). Some new systems for TLC of L-glutamic acid and L-pyroglutamic acid were also examined . AB - Pošto do sada još nije u potpunosti rešen postupak sinteze i ekonomičnog prečišćavanja L-piroglutaminske kiseline, izvršili smo ispitivanje različitih postupaka termičke intramolekulske dehidratacije L-glutaminske kiseline, kao i prečišćavanje dobijene sirove L-piroglutaminske kiseline u cilju dobijanja proizvoda većeg stepena čistoće. Uporedno si ispitivani i raniji poznati postupci i poređeni sa našim novim postupcima. Na osnovu naših rezultata može se zaključiti da je naročito pogodna sinteza iz vodenog rastvora L-glutaminske kiseline (1 deo kiseline i 3 dela vode) i prekristalisavanje sirovog produkta iz etanola. Najefikasnije prečišćavanje izvodi se pomoću jonoizmenjivačkih smola (Dowex, Amberlite). PB - Srpsko hemijsko društvo T2 - J. Serb. Chem. Soc. T1 - Intramolecular dehydration of L-glutamic acid T1 - Intramolekulska dehidratacija L-glutaminske kiseline EP - 15 IS - 1 SP - 11 VL - 54 UR - https://hdl.handle.net/21.15107/rcub_technorep_5124 ER -
@article{ author = "Mijin, Dušan and Petrović, S. and Stojanović, O.", year = "1989", abstract = "A number of various thermal dehydrations of L-glutamic acid were performed in order to obtain crude L-pyroglutamic acid. Some old procedures and some new ones were investigated. Also, a great deal of work was done on the purification of crude L-pyroglutamic acid. We can say that among other very good procedures for synthesis and purification we can count our own, modified synthesis in aqueous solution of L-glutamic acid (acid: water = 1:3) and recrystallization from ethanol. The most efficient purification was carried out on ion-exchange resins (Dowex, Amberlite). Some new systems for TLC of L-glutamic acid and L-pyroglutamic acid were also examined ., Pošto do sada još nije u potpunosti rešen postupak sinteze i ekonomičnog prečišćavanja L-piroglutaminske kiseline, izvršili smo ispitivanje različitih postupaka termičke intramolekulske dehidratacije L-glutaminske kiseline, kao i prečišćavanje dobijene sirove L-piroglutaminske kiseline u cilju dobijanja proizvoda većeg stepena čistoće. Uporedno si ispitivani i raniji poznati postupci i poređeni sa našim novim postupcima. Na osnovu naših rezultata može se zaključiti da je naročito pogodna sinteza iz vodenog rastvora L-glutaminske kiseline (1 deo kiseline i 3 dela vode) i prekristalisavanje sirovog produkta iz etanola. Najefikasnije prečišćavanje izvodi se pomoću jonoizmenjivačkih smola (Dowex, Amberlite).", publisher = "Srpsko hemijsko društvo", journal = "J. Serb. Chem. Soc.", title = "Intramolecular dehydration of L-glutamic acid, Intramolekulska dehidratacija L-glutaminske kiseline", pages = "15-11", number = "1", volume = "54", url = "https://hdl.handle.net/21.15107/rcub_technorep_5124" }
Mijin, D., Petrović, S.,& Stojanović, O.. (1989). Intramolecular dehydration of L-glutamic acid. in J. Serb. Chem. Soc. Srpsko hemijsko društvo., 54(1), 11-15. https://hdl.handle.net/21.15107/rcub_technorep_5124
Mijin D, Petrović S, Stojanović O. Intramolecular dehydration of L-glutamic acid. in J. Serb. Chem. Soc.. 1989;54(1):11-15. https://hdl.handle.net/21.15107/rcub_technorep_5124 .
Mijin, Dušan, Petrović, S., Stojanović, O., "Intramolecular dehydration of L-glutamic acid" in J. Serb. Chem. Soc., 54, no. 1 (1989):11-15, https://hdl.handle.net/21.15107/rcub_technorep_5124 .