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Cyclization Reactions of β,γ‐Unsaturated Derivatives of Carbonic Acid. XI. Investigation of Stereochemistry of the Cyclofunctionalization of β,γ‐Unsaturated Carbamic Acid Esters N, N‐Disubstituted β,γ‐unsaturated urethanes 1 have been cyclized to 3,5‐disubstituted oxazolidine‐2‐ones 3 by aromatic sulfenyl chlorides 2. The stereochemistry of the products and the cyclofunctionalization reaction were investigated.

Molecule Linkage by Sulfur Chlorides. VI. The Reaction of Sulfur Dichloride with Thiocarbamic Acid Esters Sulfur dichloride reacts with thiocarbamic acid esters to form aminoacyl trisulfides. The reaction of sulfur dichloride with unsaturated thiocarbamic acid esters yields heterocycles of the 2‐thiazolidinon and 3‐dithiazinon type.

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