نتایج جستجو برای: benzothiazol
تعداد نتایج: 266 فیلتر نتایج به سال:
In the title mol-ecule, C(16)H(14)N(2)OS(2), the benzene ring and the benzo[d]thia-zole mean plane form a dihedral angle of 75.5 (1)°. The acetamide group is twisted by 47.7 (1)° from the attached benzene ring. In the crystal, mol-ecules related by translation along the a axis are linked into chains through N-H⋯O hydrogen bonds.
In the title compound, C(17)H(16)N(2)O(2)S, the dihedral angle between the benzothia-zole ring system and the benzene ring is 1.20 (2)°. The substituted amino substituent is in an extended conformation with an N-C-C-O torsion angle of 179.4 (3)°. In the crystal structure, pairs of mol-ecules are connected by inter-molecular N-H⋯O and weak C-H⋯O hydrogen bonds, forming centrosymmetric dimers.
Ten new derivatives of 1-benzothiazol-2-yl-3-chloro-4-substituted-azetidin-2-ones (3a-j) were synthesized using various Schiff bases (alkyl/arylidene-2-aminobenzothiazoles; 2a-j), which in turn were prepared starting from 2-aminobenzothiazole (1). All the synthesised compounds were characterised by elemental analyses and spectral (IR, 1H-NMR, 13C-NMR and EI-MS) data. The title compounds 2a-j an...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید