1982
DOI: 10.1107/s0567740882004270
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Die Strukturen von 1,3-Dimethyl-3',4'-diphenylimidazolidin-2-spiro-2'(2'H)-thiet-4,5-dion, 1,3-Dimethyl-4',5'-diphenylimidazolidin-2-spiro-3'(3'H)-1',2'-dithiol-4,5-dion und 1,3-Dimethyl-2-(1,2-diphenylethyl)imidazolidin-4,5-dion

Abstract: The first two title compounds are obtained from the light-induced reaction of 1,3-dimethyl-2-thioparabanic acid in the presence of diphenylacetylene, whereas the third product resulted from treatment of the first with Raney nickel. The structure of 1,3-dimethyl-3',4'-diphenylimidazolidine-2-spiro-2' (2'H)-thiete-4,5-dione (C19Ht6N202 S) was solved by direct methods and refined by least-squares techniques to a residual R index of 0.047 based on 2131 observations with I _> 2o(/). The compound crystallizes in the… Show more

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Cited by 8 publications
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