نتایج جستجو برای: indol
تعداد نتایج: 1726 فیلتر نتایج به سال:
In the title compound, C13H15NO2, the acetate group [C-C(=O)-O] makes a dihedral angle of 62.35 (13)° with the mean plane of the indole ring system [maximum deviation = 0.011 (3) Å]. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, forming helical chains propagating along [010].
In the crystal, the mol-ecules of the title compound, C(15)H(10)BrNO, are connected into centrosymmetric dimers by pairs of N-H⋯O hydrogen bonds. The dihedral angle between the planes of indole ring system and benzene ring is 50.13 (5)°. The indole plane is significantly less twisted from the plane of the central C-C(=O)-C bridge than the benzene plane [dihedral angles = 15.51 (3) and 40.13 (7)...
The title compound, C(24)H(21)N(3)O, was prepared by the reaction of (Z)-2-(1H-indol-3-ylmethyl-ene)-1-aza-bicyclo-[2.2.2]octan-3-one with α-bromo-p-toluonitrile, under phase-transfer catalytic (PTC) conditions using triethyl-benzyl-ammonium chloride and 50% w/v aqueous NaOH solution in dichloro-methane. The crystal structure indicates the presence of a double bond with Z geometry connecting th...
The first total synthesis of the dimeric alkaloid pigment scytonemin is described. The key transformations in its synthesis from 3-indole acetic acid are a Heck carbocyclization and a Suzuki-Miyaura cross-coupling, orchestrated in a stereospecific tandem fashion, followed by a biosynthetically inspired oxidative dimerization. The tandem sequence generates a tetracyclic (E)-3-(arylidene)-3,4-dih...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید