The title compound, C(20)H(23)N(4)O(6)PS, was synthesized by the reaction of N-(4-methoxy-benzyl-idene)-5-(4-nitro-phen-yl)-1,3,4-thia-diazol-2-amine and diethyl phosphite. The thia-diazole and nitro-substituted phenyl rings in the mol-ecule are approximately coplanar, the dihedral angle being 5.3 (2)°. The dihedral angle formed by the mean plane through all non-H atoms of both the thia-diazole...

The new title 4-thia-zolidinone derivative, C16H21N3O3S, was obtained from the cyclization reaction of 4-methyl-3-thio-semicarbazone and dimethyl acetyl-enedi-carboxyl-ate (DMAD). The cyclo-hexyl-idene ring has an envelope conformation with the stereogenic centre C atom as the flap. Its mean plane makes a dihedral angle of 56.23 (9)° with the thia-zolidine ring mean plane. In the crystal, mol-e...

Several new and know 6-(4-substituted phenyl)-4-(4-substituted phenyl)-2-phenyl-6H-1,3-thiazine (or selenazine) (Z4B7, Z4D5, Z4B7' Z4D5') were prepared by the 1,4-Michael addition reaction of chalcone derivatives with thiobenzamide or phenylselenocarboxamide in basic medium (where chalcones was formed Claisen-Schimidt condensation aromatic aldehydes 4-substituted acetophenone presence sodium hy...

In the title compound C18H26BrNO2S, the thia-zepine ring adopts a boat conformation. The dihedral angle between the mean planes through the benzene ring and the four C atoms making up the basal plane of the boat is 35.8 (2)°. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R 2 (2)(8) loops.

The dihedral angle between the triazole ring and the thia-zole ring in the title compound, C(9)H(13)N(5)S, is 64.35 (7)°. The crystal structure is stabilized by inter-molecular N-H⋯N hydrogen bonds, which link the mol-ecules into a two-dimensional network.

In the title compound, C(16)H(13)ClFN(3)O(2)S, the dihedral angle between the benzene rings is 4.47 (3)°. The conformation of the thia-zine ring is a half-chair and the Cl atom is in an axial orientation. In the crystal, mol-ecules are linked by C-H⋯F inter-actions, generating C(12) chains propagating in [011]. Aromatic π-π stacking inter-actions [centroid-centroid separations = 3.753 (2) and 3...

In the title compound, C(22)H(19)Cl(2)N(5)S, the thia-zole and pyrimidine rings are almost co-planar, making a dihedral angle of 6.48 (7)°. In the crystal, intermolecular N-H⋯N hydrogen bonds link pairs of molecules into centrosymmetric dimers..

In the title compound, C(13)H(17)N(2)OS(+)·Cl(-), the thia-zolium ring mean plane makes a dihedral angle of 55.46 (9)° with the benzene ring. In the propanol group, the N-C-C-C and N-C-C-O torsion angles are 172.58 (15) and 52.9 (2)°, respectively, and the S-C-C-C torsion angle is 178.99 (18)°. In the crystal, mol-ecules are linked by O-H⋯Cl and N-H⋯Cl hydrogen bonds, forming zigzag chains alon...

In the title compound, C(9)H(11)N(3)O(2)S, the thia-zine ring adopts a half-chair conformation. In the crystal structure N-H⋯N hydrogen bonds connect two mol-ecules into a centrosymmetric dimer, forming an R(2) (2)(6) ring motif. These dimers are further connected into chains by N-H⋯O and C-H⋯O hydrogen bonds.

BACKGROUND [(18)F]-6-thia-14-fluoro-heptadecanoic acid 3b, a free fatty acid, has been used in myocardial PET imaging. In order to establish an automated synthesis module for routine production in the country, a study was performed for optimization of the production conditions as well as making modifications. MATERIAL AND METHODS [(18)F]Benzyl-14-Fluoro-6-thia-heptadecanoate 2b was prepared i...