Cyclisierungsreaktionen β,γ-ungesättigter Kohlensäurederivate. X. Reaktionen von N-Cinnamylcarbamidsäureestern mit Sulfenylchloriden-Synthese von 3, 5-disubstituierten Oxazolidin-2-onen
Abstract
Cyclization Reactions of β,γ-Unsaturated Derivatives of Carbonic Acid. X. Reaction of N-Cinnamyl Carbamic Acid Esters with Sulfenyl Chlorides—Synthesis of 3,5-Disubstituted Oxazolidine-2-ones
N-Cinnamyl urethanes 1 have been cyclized to 3,5-disubstituted oxazolidine-2-ones 3 by aromatic sulfenyl chlorides in methylene chloride. The tetrahydro-2H-1,3-oxazine-2-ones 6 were obtained by reaction of 5-bromotetrahydro-2H-1,3-oxazine-2-ones 8 with thiophenols.