نتایج جستجو برای: indol

تعداد نتایج: 1726  

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

2013
Guo-Min Tang Wei Xu

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].

2009
Grzegorz Dutkiewicz C. S. Chidan Kumar H. S. Yathirajan Maciej Kubicki

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)...

Journal: :Acta Crystallographica Section E Structure Reports Online 2013

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

2008
Thirupathi Reddy Yerram Reddy Narsimha Reddy Penthala Sean Parkin Peter A. Crooks

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...

2011
Andreas Ekebergh Isabella Karlsson Rudi Mete Ye Pan Anna Börje Jerker Mårtensson

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...

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