ISSN:
0170-2041
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
o-Alkyl Thioates and Dithioates,-Reactions of Phosphorous Ylides with Thiooxalates - A New Synthesis of α, β-Unsaturated oAlkyl ThioatesThe reaction of dimethyl tetrathiooxalate (1) with alkylidenetriphenylphosphoranes 2 leads to the formation of triphenylphosphane sulfide (3) and a complex mixture of unstable products; with the disubstituted phosphoranes 4a, b the 1,3-dithioles 5 and triphenylphosphane (6) were isolated. O,O-Dimethyl dithiooxalate (8) is transformed into α,β-unsaturated O-alkyl thioates 9 by thiocarbonyl olefination with 2 and 4
Notes:
Die Reaktionen von Tetrathiooxalsäure-dimethylester (1) mit den Alkylidentriphenylphosphoranen 2 liefert neben Triphenylphosphansulfid (3) lediglich zersetzliche Produktgemische; mit den disubstituierten Phosphoranen 4a, b entstehen die 1,3-Dithiole 5 und Triphenylphosphan (6). Dithiooxalsäure-O,O-dimethylester (8) bildet mit 2 und 4 durch Thiocarbonyl-Olefinierung die α,β-ungesättigten Thionester 9.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jlac.198319830211
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