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New dithio-bis-(diaroylmethanes) and acetyl diaroylchloromethyl disulfides: Attractive synthons and precursors for the liberation of highly reactive dithiiranes or thiosulfines

Neue Dithio-bis-(diaroylmethane) und Acetyl-diaroylchlormethyl-disulfide: attraktive Synthone und Vorläufer zur Freisetzung hochreaktiver Dithiirane oder Thiosulfine

  • Organische Chemie Und Biochemie
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Monatshefte für Chemie / Chemical Monthly Aims and scope Submit manuscript

Summary

In a new, feasible procedure five symmetricalpara-substituted diaroylmethanes ((4-X-C6H4-CO)2-CH2;X=F, Cl, Br, CH3, and CH3O) are prepared, in most cases in very good yields. For purification and activation, they are converted into the copper(II) complexes of their enolates. Subsequently, three reaction steps with disulfur dichloride (S2Cl2), chlorine, and ethanethioic acid yield new CH-acidic dithio-bis-(diaroylmethanes), α-chlorosulfenic acid chlorides, and acetyl diaroyl-chloromethyl disulfides. The latter compounds are of interest for the liberation of highly reactive dithiirane/thiosulfine species. With thiomorpholine, α-chlorosulfenic acid chlorides give α-chlorosulfenic acid amides.

Zusammenfassung

In einem neuen, gut handhabbaren Verfahren werden in meist sehr guter Ausbeute fünf symmetrischepara-substituierte Diaroylmethane ((4-X-C6H4-CO)2-CH2;X=F, Cl, Br, CH3 und CH3O) und daraus zur Reinigung und Aktivierung die Kupfer(II)komplexe ihrer Enolate dargestellt. Drei Reaktionsschritte mit Dischwefeldichlorid (S2Cl2), Chlor und Thioessigsäure führen der Reihe nach anschließend zu neuen CH-aciden Dithio-bis-(diaroylmethanen), α-Chlorsulfensäure-chloriden und Acetyl-diaroylchlormethyl-disulfiden. Die letzteren Verbindungen sind zur Freisetzung von hochreaktiven Dithiiran/Thiosulfin-Spezies von Interesse. Mit Thiomorpholin geben α-Chlorsulfensäurechloride α-Chlorsulfensäureamide.

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Franek, W. New dithio-bis-(diaroylmethanes) and acetyl diaroylchloromethyl disulfides: Attractive synthons and precursors for the liberation of highly reactive dithiiranes or thiosulfines. Monatsh Chem 127, 895–907 (1996). https://doi.org/10.1007/BF00807029

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  • DOI: https://doi.org/10.1007/BF00807029

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