Comparison of the crystal structures of methyl 4-bromo-2-(methoxymethoxy)benzoate and 4-bromo-3-(methoxymethoxy)benzoic acid
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چکیده
منابع مشابه
Comparison of the crystal structures of methyl 4-bromo-2-(methoxymethoxy)benzoate and 4-bromo-3-(methoxymethoxy)benzoic acid
The title compounds, C10H11BrO4, (I), and C9H9BrO4, (II), are derivatives of bromo-hy-droxy-benzoic acids. Compound (II) crystallizes with two independent mol-ecules (A and B) in the asymmetric unit. In both (I) and (II), the O-CH2-O-CH3 side chain is not in its fully extended conformation; the O-C-O-C torsion angle is 67.3 (3) ° in (I), and -65.8 (3) and -74.1 (3)° in mol-ecules A and B, respe...
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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.
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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.
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The title compound C(9)H(9)BrO(3), was synthesized by the regioselective bromination of 4-meth-oxy-phenyl-acetic acid using bromine in acetic acid in a 84% yield. In the mol-ecular structure, the meth-oxy group is almost coplanar with the phenyl ring within 0.06 Å; the acetic acid substituent is tilted by 78.15 (7)° relative to the ring. The C-C-C angles at the OMe, acetyl and Br substituents a...
متن کاملCrystal structures of isomeric 4-bromo-N-[(2-nitrophenyl)sulfonyl]benzamide and 4-bromo-N-[(4-nitrophenyl)sulfonyl]benzamide
The syntheses and crystal structures of the isomeric 4-bromo-N-[(2-nitro-phen-yl)sulfon-yl]benzamide, (I), and 4-bromo-N-[(4-nitro-phen-yl)sulfon-yl]benzamide, (II), are described (mol-ecular formula = C13H9BrN2O5S in each case). The asymmetric unit of (I) contains two independent mol-ecules [(IA) and (IB)], while that of (II) contains one mol-ecule. The benzoic acid aromatic ring of mol-ecule ...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Crystallographic Communications
سال: 2016
ISSN: 2056-9890
DOI: 10.1107/s2056989016003777