članak: 1 od 1  
Journal of the Serbian Chemical Society
2004, vol. 69, br. 11, str. 949-953
jezik rada: engleski
kratki članak
doi:10.2298/JSC0411949J
Kinetika reakcije 5-supstituisanih orotinskih kiselina sa dizaodifenilmetanom
Jovanović Bratislav Ž., Assaleh Fathi H., Marinković Aleksandar D.
Univerzitet u Beogradu, Tehnološko-metalurški fakultet

Sažetak

Konstante brzine za reakciju osam 5-spstituisanih orotinskih kiselina sa diazodifenilmetanom (DDM) određene su na 30 ºC u dimetilformamidu (DMF) kao rastvarač u, poznatom spektrofotometrijskim metodom. Konstante brzina ispitivanih reakcija korelisane su sledećim jednačinama: logk2 = ασ1+βσR+h logk2 = ασ1+βσR+ψν+h sa ciljem da se odrede efekti supstituenata. Dobijeni rezultati ukazuju na to da su električni efekti supstituenata (induktivni i rezonantni) preovlađujući, a da su sterni efekti supstituenata, iako su prisutni, u odnosu na njih relativno mali.

Ključne reči

orotic acids; diazodiphenylmethane; reaction kinetics dimethylformamide

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