Isomerisation of Methyl (E) 2-Bromo-3-(4-XC6H4)-propenoates
نویسندگان
چکیده
منابع مشابه
(E)-Methyl 2-[(4-bromo-2-formylphenoxy)methyl]-3-phenylacrylate
The C=C double bond in the title compound, C(18)H(15)BrO(4), adopts an E configuration. The two rings are almost orthogonal to each other, making a dihedral angle of 82.8 (1)°. An intra-molecular C-H⋯O hydrogen bond occurs. The crystal structure is stabilized by inter-molecular C-H⋯O hydrogen bonds.
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In the crystal structure of the title compound, C(14)H(11)BrClNO(4)S, the mol-ecules form inversion dimers with R(2) (2)(8) motifs through pairs of N-H⋯O hydrogen bonds. The benzene rings are not coplanar and subtend a dihedral angle of 66.27 (8)°. The carbomethoxy group makes a dihedral angle of 75.1 (1)° with the ring to which it is attached.
متن کامل(E)-4-Bromo-N-{(E)-3-[(4-bromo-2-methylphenyl)imino]butan-2-ylidene}-2-methylaniline
The title compound, C(18)H(18)Br(2)N(2), is centrosymmetric with the mid-point of the central C-C bond of the butyl group located on an inversion center. The terminal benzene ring is approximately perpendicular to the central butyl plane [dihedral angle = 71.9 (8)°]. No hydrogen bonding or aromatic stacking is observed in the crystal.
متن کاملMethyl 4-bromo-3-hydroxybenzoate
In the title compound, C(8)H(7)BrO(3), the meth-oxy-carbonyl group is twisted at a dihedral angle of 8.06 (4)° with respect to the benzene ring. In the crystal, mol-ecules are connected by O-H⋯O hydrogen bonds into helical chains running along the b axis.
متن کاملMethyl (E)-3-(2-bromo-4,5-dimethoxybenzylidene)dithiocarbazate
The title compound, C(11)H(13)BrN(2)O(2)S(2), was obtained from the condensation reaction of methyl dithio-carbazate and 2-bromo-4,5-dimeth-oxy-benzaldehyde. In the mol-ecule, the benzene ring and dithio-carbazate fragment are located on opposite sides of the C=N bond, showing an E conformation. The dithio-carbazate fragment is approximately planar (r.m.s deviation = 0.0281 Å) and the mean plan...
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ژورنال
عنوان ژورنال: Molecules
سال: 2000
ISSN: 1420-3049
DOI: 10.3390/50300472