Sterically hindered alcohols e.g. (I; R = H) were acylated with O-4-methylphenyl chlorothioformate in high yield and the resulting thiocarbonates were converted into olefins by pyrolysis.
Das Spiro‐nonandiol (I) liefert mit dem Chlorthioameisensäureester (II) in Pyridin bei Raumtemperatur das Thiocarbonat (III), das oberhalb von 135°C zu Kohlenoxysulfid, p‐Kresol (IV) und zu dem Spiro‐nonadien (V) zersetzt wird.
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