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Synthesis, Spectroscopic Characterization and ab initio Investigation of Thioanalogues of Spirohydantoins

Marin Marinov
Stoyan Minchev
Neyko Stoyanov
Galya Ivanova
Milena Spassova
Venelin Enchev

Puni tekst: engleski pdf 164 Kb

str. 9-16

preuzimanja: 880



Dithioanalogues of cycloalkanespiro-5-hydantoins were prepared by reaction of the respective spirohydantoins with Lawesson’s reagent or P4S10. Cycloalkanespiro-5-(2-thiohydantoins) and cycloalkanespiro-5-(4-hydantoins) were also synthesized from cycloalkanespiro-5-(2,4-dithiohydantoins) via different reaction pathways. The structures of the compounds obtained were verified by 1H, 13C NMR and IR spectroscopy. Quantum-chemical calculations at the ab initio level of molecular nonlinear characteristics were performed. Increase of polarizability α and the second hyperpolarizability γ with enlarging the saturated ring was observed in all the structures studied.

Ključne riječi

spirothiohydantoins, spirodithiohydantoins, Lawesson’s reagent

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Podaci na drugim jezicima: hrvatski

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