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2-Methyl-1-(4-methyl-phenyl-sulfon-yl)naphtho-[2,1-b]furan.

ABSTRACT: In the title compound, C(20)H(16)O(3)S, the 4-methyl-phenyl ring makes a dihedral angle of 83.07?(3)° with the mean plane [r.m.s. deviation = 0.020?(1)?Å] of the naphtho-furan fragment. In the crystal, mol-ecules are linked by weak C-H?O and C-H?? inter-actions.

SUBMITTER: Choi HD

PROVIDER: S-EPMC3344130 | biostudies-literature | 2012 Apr

REPOSITORIES: biostudies-literature

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2-Methyl-1-(phenyl-sulfon-yl)naphtho[2,1-b]furan.

Project description:The title compound, C(19)H(14)O(3)S, was prepared by the oxidation of 2-methyl-1-(phenyl-sulfan-yl)naphtho[2,1-b]furan with 3-chloro-peroxy-benzoic acid. The phenyl ring makes a dihedral angle of 87.13 (4)° with the plane of the naphthofuran fragment. The crystal structure is stabilized by π-π inter-actions between the furan and benzene rings of neighbouring mol-ecules [centroid-centroid distance = 3.850 (2) Å] and weak C-H⋯π inter-actions. In addition, there are also intra-molecular C-H⋯O inter-actions.

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1-(4-Bromo-phenyl-sulfon-yl)-2-methyl-naphtho-[2,1-b]furan.

Project description:In the title compound, C(19)H(13)BrO(3)S, the 4-bromo-phenyl ring makes a dihedral angle of 64.11?(2)° with the mean plane [r.m.s. deviation = 0.01?(2)?Å] of the naphtho-furan ring. In the crystal, mol-ecules are linked by weak C-H?O and C-H?? inter-actions. The crystal structure also exhibits slipped ?-? inter-actions between the central naphtho-furan benzene rings of neighbouring mol-ecules [centroid-centroid distance = 3.559?(2), slippage = 1.036?(2)?Å], and between the central naphtho-furan benzene ring and the furan ring of neighbouring mol-ecules [centroid-centroid distance = 3.655?(2), slippage = 1.136?(2)?Å].

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7-Bromo-2-methyl-1-(phenyl-sulfon-yl)naphtho[2,1-b]furan.

Project description:The title compound, C(19)H(13)BrO(3)S, was prepared by the oxidation of 7-bromo-2-methyl-1-(phenyl-sulfan-yl)naph-tho[2,1-b]furan with 3-chloro-peroxy-benzoic acid. The phenyl ring makes a dihedral angle of 80.4 (2)° with the plane of the naphthofuran fragment. The crystal structure is stabilized by aromatic π-π stacking inter-actions between the brominated benzene ring and the central benzene ring of the naphthofuran system of neighbouring mol-ecules; the centroid-centroid distances within the stack are 3.889 (3) and 3.981 (3) Å. In addition, the stacked mol-ecules exhibit C-H⋯π, inter- and intra-molecular C-H⋯O inter-actions.

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Project description:In the title compound, C(19)H(12)BrFO(3)S, the 3-fluoro-phenyl ring makes a dihedral angle of 80.85?(5)° with the mean plane [r.m.s. deviation = 0.009?(2)Å] of the naphtho-furan fragment. In the crystal, mol-ecules are linked by slipped ?-? inter-actions between the furan and the outer benzene rings of neighbouring mol-ecules [centroid-centroid distance = 3.756?(3)?Å and slippage of 1.189?(3)?Å].

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7-Bromo-1-(4-fluoro-phenyl-sulfon-yl)-2-methyl-naphtho-[2,1-b]furan.

Project description:In the title compound, C(19)H(12)BrFO(3)S, the 4-fluoro-phenyl ring makes a dihedral angle of 80.32 (5)° with the mean plane of the naphtho-furan fragment. In the crystal, mol-ecules are linked by weak inter-molecular C-H⋯O and C-H⋯π inter-actions. The crystal structure also exhibits aromatic π-π inter-actions between the central benzene rings of neighbouring mol-ecules [centroid-centroid distance = 3.564 (3) Å].

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2-Methyl-3-(phenyl-sulfon-yl)naphtho[1,2-b]furan.

Project description:In the title mol-ecule, C(19)H(14)O(3)S, the phenyl ring forms a dihedral angle of 69.13 (6)° with the plane of the naphthofuran fragment, being slightly tilted towards it. The crystal packing exhibits π-π inter-actions between the benzene rings from neighbouring mol-ecules [centroid-centroid distance = 3.616 (4) Å] and weak C-H⋯O and C-H⋯π inter-actions.

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1-(4-Bromo-phenyl-sulfin-yl)-2-methyl-naphtho-[2,1-b]furan.

Project description:In the title compound, C(19)H(13)BrO(2)S, the 4-bromo-phenyl ring makes a dihedral angle of 83.75?(4)° with the mean plane of the naphtho-furan fragment [r.m.s. deviation = 0.024?(2)?Å]. In the crystal, mol-ecules are linked via pairs of C-H?O hydrogen bonds, forming inversion dimers. These dimers are connected by weak ?-? inter-actions between the central naphtho-furan benzene rings of neighbouring mol-ecules [centroid-centroid distance = 3.483?(2)?Å, inter-planar distance = 3.416?(2)?Å and slippage = 0.680?(2)?Å].

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3-(4-Chloro-phenyl-sulfon-yl)-2-methyl-naphtho[1,2-b]furan.

Project description:The title compound, C(19)H(13)ClO(3)S, was prepared by the oxidation of 3-(4-chloro-phenyl-sulfan-yl)-2-methyl-naphtho[1,2-b]furan with 3-chloro-peroxy-benzoic acid. The 4-chloro-phenyl ring makes a dihedral angle of 68.59 (5)° with the plane of the naphthofuran fragment. The crystal structure is stabilized by π-π inter-actions between the benzene rings of neighbouring mol-ecules [centroid-centroid distance = 3.635 (3) Å], and by C-H⋯π inter-actions between a methyl H atom and the furan ring of an adjacent mol-ecule. In addition, the crystal structure exhibits inter-molecular C-H⋯O inter-actions.

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