Sulfone of (XVIII).-A sample of the thioether (XVIII) 1200 mg.) was oxidized with Superoxol as described for the preparation of the lower homolog. Recrystallization from methanol gave 190 mg.(87% of the theoretical yield) of needles melting at 169-170". Anal. Calcd. for C1, Hz104SaS: C, 57.95; H, 6.86; S, 7.94; S, 9.10. Found: C, 57. i9; H, 6.59; N, i. 93; S, 9.17. dl- Hexahydro-2-oxo-4-(5-mercaptopentyl)-1-furo-(3, 4)-imidazole (XIX).-Five hundred ...
