نتایج جستجو برای: 4 trimethyl 2
تعداد نتایج: 3118048 فیلتر نتایج به سال:
In the title mol-ecule, C(17)H(15)FO(2)S, the O atom and the 4-fluoro-phenyl group of the 4-fluoro-phenyl-sulfinyl substituent lie on opposite sides of the benzofuran fragment. The mean planes of the benzofuran and 4-fluoro-phenyl fragments form a dihedral angle of 86.07 (4)°. In the crystal structure, weak inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into centrosymmetric dimers, wh...
In the title mol-ecule, C(17)H(15)ClO(2)S, the 4-chloro-phenyl ring is oriented approximately perpendicular to the mean plane of the benzofuran ring [dihedral angle = 88.98 (4)°]. In the crystal, mol-ecules are linked through weak inter-molecular C-H⋯O and C-H⋯π inter-actions, forming right-hand pseudo-helices along the a axis.
In the title compound, C17H15BrO2S, the dihedral angle between the mean plane [r.m.s. deviation = 0.003 (2) Å] of the benzo-furan ring system and the mean plane [r.m.s. deviation = 0.006 (2) Å] of the 4-bromo-phenyl ring is 83.09 (7)°. In the crystal, weak C-H⋯π inter-actions are observed.
In the title compound, C(17)H(15)FO(3)S, the 4-fluoro-phenyl ring makes a dihedral angle of 72.67 (5)° with the benzofuran plane. In the crystal, mol-ecules are linked by weak inter-molecular C-H⋯O hydrogen bonds.
The mol-ecule of the title compound, C(17)H(16)Br(2)N(2)O(2), lies on a twofold axis that passes through the middle atom of the three-atom trimethyl-ene unit. The two aromatic rings are aligned at an angle of 76.02 (4)°.
A chiral template was constructed from 7-ethynyl-1,5,7-trimethyl-3-azabicyclo[3.3.1]nonan-2-one by Sonogashira cross-coupling with 4,4''-diiodoterphenyl and was shown to bind the title compound strongly by hydrogen bonding resulting in enantioselectivities of up to 55% enantiomeric excess (ee) in the [4+4] anthracene photodimerization.
Influences of matrix particle size distribution (PSD) (18, 25, 35 and 50 lm) and fat content (25%, 30% and 35%) on flavour release of dark chocolate volatiles were quantified by static headspace gas chromatography using GC–MS. Sixty-eight (68) flavour compounds were identified, comprising alcohols, aldehydes, esters, ketones, furans, pyrans, pyrazines, pyridines, pyroles, phenols, pyrones and t...
The hydro-thermal reaction of benzene-1,4-dicarboxylic acid and 4,4'-trimethyl-ene dipiperidine leads to the formation of the title compound, C(13)H(28)N(2) (2+)·C(8)H(4)O(4) (2-). The anion is located on a center of inversion whereas the cation is positioned on a twofold rotation axis. In the crystal structure, the anions and cations are linked by N-H⋯O and N-H⋯(O,O) hydrogen bonds.
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید