14109-98-9Relevant academic research and scientific papers
Two cycloalkanespiro-5-(2-thiohydantoins): Synthesis, spectral and structural characterization
Ahmedova, Anife,Pavlovi?, Gordana,Marinov, Marin,Stoyanov, Neyko,?i?ak, Dubravka,Mitewa, Mariana
, p. 165 - 173 (2009)
The presented study deals with the structural and spectral properties of two derivatives of 2-thiohydantoin employing experimental and theoretical methods. The crystal structures of two novel cycloalkanespiro-5-(2-thiohydantoins) are described and compare
Two methods for spirothiohydantoin synthesis
Stoyanov, Neyko,Marinov, Marin
, p. 680 - 685,6 (2020/08/24)
Two methods for spirothiohydantoin synthesis are presented. The title compounds were prepared with reaction of the corresponding 1- aminocycloalkanecarboxylic acids and thiourea. These compounds were also prepared by a hydrolysis of the relevant spirodithiohydantoins with barium hydroxide. The structures of the compounds obtained were verified by comparison of 1H, and 13C NMR, IR and MS spectral data.
Evaluation of strategies for the synthesis of the guanidine hemiaminal portion of palau'amine
Lanman, Brian A.,Overman, Larry E.
, p. 557 - 570 (2008/02/02)
Potential methods for the generation of the guanidine hemiaminal functionality of palau'amine (1) from a spirocyclic thiohydantoin precursor are examined using a spirobicyclic model system, culminating in the identification of an efficient means of effect
Synthesis, spectroscopic characterization and ab initio investigation of thioanalogues of spirohydantoins
Marinov, Marin,Minchev, Stoyan,Stoyanov, Neyko,Ivanova, Galya,Spassova, Milena,Enchev, Venelin
, p. 9 - 16 (2007/10/03)
Dithioanalogues of cycloalkanespiro-5-hydantoins were prepared by reaction of the respective spirohydantoins with Lawesson's reagent or P4S 10. 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 ? with enlarging the saturated ring was observed in all the structures studied.
