22 2. Aus a b-Thiocarbaminat: H H—H- H— H CH*— CH, —H H —CH, H / H— \C = S u. H CHs- CH, -NH-C- NH —H H —CH., H H— H CHs- H H —H H -CH, CH, N x N—H H-N Esothioharnstoff Sp. 77° und n b-Thioharnstoff Sp. 199—200°. 3. Aus ß a-Thiocarbaminat: S H H- H- CH,- H NH-C-NH -H -H H— H —CH, CH,- CH, CH, H —H H —CH, H H-N N-H ß a-Thioharnstoff Sp. 164—165°. 4. Aus ß b-Tiocarbaminat: S H H— H CH,— H NH-C-NH- —H H H- H -CH, CH,— CH, CH, H —H H -CH, H N-H H-N ß b-Thioharnstoff Sp. 171—172°.