Yazar "Karaarslan M." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim Yok
    Öğe
    Studies on the heavy metal removal efficiency and antibacterial activity of 2-(diphenylphosphino)aminopyridine
    (Macedonian Journal of Chemistry and Chemical Engineering, 2018) Sariöz Ö.; Malgaç B.; Sürme Y.; Ilk S.; Karaarslan M.
    The solvent extraction of metal picrates such as Ni2+, Cu2+, Co2+, Pb2+ and Cd2+ from the aqueous to the organic phase was studied using 2-(diphenylphosphino)aminopyridine (Ph2PNHpy). The effects of parameters including the pH of the aqueous phase and the ligand solution volume were investigated to de-termine the extraction ability of the ligand for metal ions. The results showed that the extraction percent-ages of metal ions were high at low pH values. The antibacterial activity of the aminophosphine was also screened against Escherichia coli (E. coli) ATCC 25922, Staphylococcus aureus (S. aureus) ATCC 25923, Pseudomonas syringae pv. tomato (P. syringae) DC300, Salmonella enterica serotype Typhmuri-um (S. typhmurium) SL 1344 and Streptococcus mutans (S. mutans) ATCC 25175. From the studies of antibacterial activity, it was observed that the ligand exhibited a potent inhibitory effect against all Gram-negative and Gram-positive bacteria with a diameter of inhibition zone ranging from 3.86 to 18.10 mm. The aminophosphine ligand (Ph2PNHpy) should be considered as a suitable bio-active molecule for anti-microbial material design and next-generation, non-toxic drug fabrication. The Ph2PNHpy obtained may have the potential for use as an antimicrobial additive for bioengineering applications. © 2018 özlem Sariöz, Burcu Malgaç, Yavuz Sürme, Sedef Ilk, Muhsin Karaarslan.
  • Küçük Resim Yok
    Öğe
    Thermal intramolecular Diels-Alder reaction of furan; synthesis of nitrogen tetracycles, isobenzofuran and isobenzothiophene
    (2007) Karaarslan M.; Gokturk E.; Demircan A.
    Thermal intramolecular Diels-Alder (IMDA) reaction of furan cored compounds has been further investigated; a series of key precursors to the IMDA reaction of furan diene (9a-c) have been prepared via facile alkylation and protection. While the cycloaddition process for (10a-c) was afforded in hot toluene, a commercial microwave (2450 MHz) was used for the synthesis of (12a-b). Treatment of fused oxy- and thio-heterotricycles (12a-b) with borontrifluoride-etherate in dichloromethane at -78°C cleaved epoxy bridge and concomitant aromatisation gave the isobenzo-furan and thiophene (13a-b) in 72-76% yields respectively.