Croatica Chemica Acta, Vol. 78 No. 1, 2005.
Original scientific paper
Synthesis, Spectroscopic Characterization and ab initio Investigation of Thioanalogues of Spirohydantoins
Marin Marinov
Stoyan Minchev
Neyko Stoyanov
Galya Ivanova
Milena Spassova
Venelin Enchev
Abstract
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.
Keywords
spirothiohydantoins; spirodithiohydantoins; Lawesson’s reagent
Hrčak ID:
2660
URI
Publication date:
24.3.2005.
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