N-(2-Bromobenzyl)cinchoninium bromide
نویسندگان
چکیده
The title compound {systematic name: 1-(2-bromo-benz-yl)-5-ethenyl-2-[hy-droxy(quinolin-4-yl)meth-yl]-1-aza-bicyclo-[2.2.2]octan-1-ium bromide}, C(26)H(28)BrN(2)O(+)·Br(-), is a chiral quater-nary ammonium salt of one of the Cinchona alkaloids. The planes of the quinoline and of the bromo-benzyl substituent are inclined to one another by 9.11 (9)°. A weak intra-molecular C-H⋯O hydrogen bond occurs. The crystal structure features strong O-H⋯Br hydrogen bonds and weak C-H⋯Br inter-actions.
منابع مشابه
Organocatalytic regioselective Michael additions of cyclic enones via asymmetric phase transfer catalysis.
Cyclohexanone and cycloheptanone can be enantioselectively functionalized in the 3-position with up to 92% ee and 87% ee, respectively, by the base-promoted dimerization of the corresponding enones using 3,4,5-tribenzyloxybenzyl cinchoninium bromide, as a new effective catalyst.
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In the title compound, C(11)H(12)BrN(2) (+)·Br(-), the imidazole and phenyl rings are nearly perpendicular, making a dihedral angle of 87.71 (7)°. The crystal structure is stabilized by non-classical inter-molecular C-H⋯Br hydrogen bonds and inversion-related mol-ecules are linked through π-π inter-actions between the imidazole ring systems [centroid-centroid distance = 3.472 (6) Å].
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In the title compound, C(18)H(16)BrN(3), mol-ecules are linked into dimers by co-operative inter-molecular N-H⋯N hydrogen bonding. Only one N-H group is involved in hydrogen bonding. The planes of the pyridine and bromo-phenyl rings are twisted by 61.49 (3) and 79.11 (8)°, respectively, from the plane of the central phenyl ring.
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In the title compound, C14H12Br2O, the dihedral angle between the aromatic rings is 2.7 (3)° and the Br atoms lie on the same side of the mol-ecule. No inter-molecular inter-actions occur in the crystal beyond van der Waals contacts.
متن کامل3-(3-Bromobenzyl)isoquinolin-1(2H)-one
In the title compound, C(16)H(12)BrNO, the ring systems subtend an inter-planar dihedral angle of 75.95 (3)°. In the crystal packing, mol-ecules are linked to form centrosymmetric pairs by pairs of classical N-H⋯O hydrogen bonds.
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