Et<sub>3</sub>N-Mediated Synthesis of <i>N</i>-Vinylthiohydantoins from 5,5-Diarylthiohydantoins and Acetylenic Esters
作者:Mohammad Mehdi Ghanbari、Issa Yavari、Abedin Emadi
DOI:10.3184/174751913x13700860964396
日期:2013.7
The reactive 1:1 intermediates produced in the addition reactions between triethylamine and acetylenicesters were trapped by thiohydantoins to produce N-vinylthiohydantoins.
5,5-diaryl and 5-alkyl-3-phenyl-4-imidazolidones: A novel synthesis
作者:Jitender M. Khurana、Arpita Agrawal、Geeti Bansal
DOI:10.1002/jhet.165
日期:2009.9
Synthesis of 5,5-diaryl and 5-alkyl-3-phenyl-4-imidazolidones has been reported by reductive desulfurization of 5,5-diaryl and 5-alkyl-3-phenyl-2-thiohydantoins with nickel boride. J. Heterocyclic Chem., (2009).
Synthesis and dynamic NMR studies of novel hydantoin and thiohydantoin derivatives. Crystal structure of diethyl 2-(4,4-diaryl-2,5-dioxoimidazolidin-1-yl) fumarate and diethyl 2-(4,4-diaryl-2-mercapto-5-oxo-4,5-dihydro-1<i>H</i>-imidazol-1-yl)fumarate
作者:Mohammad M. Ghanbari、Marzieh Jamali、Gyula Batta、Attila C. Bényei
DOI:10.3184/174751917x14932244903881
日期:2017.5
dialkyl 2-(4,4-diaryl-2-mercapto-5-oxo-4,5-dihydro-1H-imidazol-1-yl)fumarate, 7. Single crystal X-ray diffraction study on 4b and 7b proved the structures unambiguously with C=O and SH functionality at the 2-position of the imidazole ring, respectively. Dynamic effects were observed in the NMR spectra of these compounds and were attributed to restricted rotation around the carbon-nitrogen single bonds
Reaction of alkyl isocyanides and dialkyl acetylenedicarboxylates in the presence of 5,5-diaryl thiohydantoins. Synthesis of functionalized imidazo[2,1-b][1,3]thiazines
作者:Mohammad Mehdi Ghanbari、Issa Yavari、Gyula Batta
DOI:10.1080/17415993.2013.879308
日期:2014.5.4
The reaction of stoichiometric amounts of dialkyl acetylenedicarboxylates with alkyl isocyanides in the presence of 5,5-diaryl thiohydantoins afforded imidazo[2,1-b][1,3]thiazines in good overall yields. GRAPHICAL ABSTRACT
precursor of all cucurbiturils, its sulfur analog represents a yet unmet syntheticchallenge. The reaction between glyoxal and thiourea was found to stop at the level of dihydroxyimidazolidine-2-thione, which is quite unstable under various acidic conditions. In an attempt to answer these questions, several stable analogs of thioglycoluril, that is, monothioglycoluril, ditolylthioglycoluril, and its diether