ORTHO POSITION
The Improved Efficiency of Polymer Solar Cells by Fluorine Atoms at Ortho-Position of Alkxoyphenyl Group in Benzodithiophene (BDT) Units
... at ortho-position of alkxoyphenyl group in benzodithiophene (BDT) units are ...at ortho-position of alkoxyphenyl side chains increases the oxidation potential, decreases the highest occupied ...
18
Comparative Study of Aromatic Electrophilic Substitution Reaction at the Meta and Ortho Position in Toluene
... group present in the ring is an electron donating group. Therefore, its effect on electrophilic substitution of hydrogen from the ring system was taken into consideration. Quantum mechanical based computational ...
5
QSAR Studies of 6 aryl 6H pyrrolo [3, 4 d] pyridazine analogues as high affinity ligands of the α2δsubunit of voltage gated calcium channels
... the ortho substituent (PPZ 10, 11) is also important in retaing the binding ...at ortho – position exemplified by (PPZ 18) lead to significant decrease in ...and ortho- substituents are ...
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Relationship Between the Structure of Newly Synthesized Derivatives of 1,3,4-Oxadiazole Containing 2-Methylphenol and their Antioxidant and Antibacterial Activities
... the ortho-position of phenol displayed inhibition percentage in DPPH assay slightly higher than ascorbic acid, while DPPH scavenging activity of compound (4c) with one substituted methoxy group at ...
18
Study of phenol and its derivatives based on dipole moment
... at ortho position while that of methyl alcohol and azo group at para position and the magnitude of dipole moment decrease by adding methyl alcohol at ortho position of ...its ...
5
4′ [2 (Trifluoromethyl)phenyl] 2,2′:6′,2′′ terpyridine
... an ortho -position by a bulky trifluoromethyl group. Ortho -substitution of the 4′-phenyl ring was chosen since steric interactions between the bulky group and the 3′(5′)-proton on the central ...
11
1 [N (p Hydroxyphenyl)aminomethylidene]naphthalen 2(1H) one propan 1 ol hemisolvate
... an ortho position to the aldehyde group, and there is also tautomerism which accounts for the forma- tion of either enol±imine or keto±amine tautomers (Gavranic et ...of ortho hydroxylated Schiff ...
11
Redetermined structure of diphenylphosphonimidotriphenylphosphorane: location of the hydrogen atoms and analysis of the intermolecular interactions
... Furthermore, intramolecular C–H···O contacts invariably involving hydrogen atoms in ortho-position on one of the phenyl groups of the PPh3-moiety as well as both phenyl groups of the POP[r] ...
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Ethyl 4 ({1 [2 (4 bromophenyl) 2 oxoethyl] 1H 1,2,3 triazol 4 yl}methoxy) 8 (trifluoromethyl)quinoline 3 carboxylate
... homodromic chains connecting the molecules to chains along the crystallographic a axis. Along these chains, one set of C–H···O contacts between the second methylene group bonded to the 1,2,3-triazole core as well as the ...
12
4 Chloro 3′,4′ dihydroxybiphenyl
... the ortho position. According to published data, mono- ortho , di- ortho and tetra- ortho substituted PCBs show a dihedral-angle range of 49–58, 58–67 and 86–87°, respectively ...
7
Pyridine 2,5 diamine
... in ortho-positions to the heteroatom are > 120° (Mootz & Wussow, 1981; Crawford et ...in ortho-position to the N1 ...in ortho-position to the N1 heteroatom ...
6
Lamotrigine ethanol monosolvate
... inclusion of solvent molecules to form hydrogen-bonding networks. Central dihedral angles for lamotrigine solvates are included in Table 1. Fig. 2 shows the unit cell for (I), which consists of eight lamotrigine ...
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Design, synthesis and biological evaluation of piperazinyl β carbolinederivatives as anti leishmanial agents
... on ortho position is recommended for activity. Meta position of phenyl ring is highly responsive, electron donating and withdrawing group substitution has significantly enhanced anti-leishmanial ...
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The effect of polymer composition and structure on the photo-Fries rearrangement
... para position of the phenyl ring is blocked by covalent attachment to the polymer backbone, upon irradiation, the acetate group in PAS, can only rearrange to the ortho position on the phenyl ring ...
91
Chemical Enhancement of the Surface Enhanced Raman Scattering Signals of Anilines via Their Ortho Substituents
... pKa values. Electron-withdrawing substituents including the nitro group tend to give minimal SERS enhancement relative to the alkyl substituents. Steric hindrance based on the presence of isopropyl or tertiary butyl ...
11
1 (2,4 Dinitrophenyl) 3 (2 hydroxy 5 methylphenyl)pyrazole 4 carboxaldehyde
... The nitro group in the ortho position is twisted 62.1 1° from the plane of the phenyl ring, whereas the nitro group in the para position is almost coplanar [dihedral angle 9.1 2° with th[r] ...
10
Synthesis and Kinetic Resolution of Substituted Tetrahydroquinolines by Lithiation then Electrophilic Quench
... Treatment of N -Boc-2-aryl-1,2,3,4-tetrahydroquinolines with n -butyllithium in THF at 78 C resulted in e ffi cient lithiation at the 2-position and the organolithiums were trapped with a variety of electrophiles to ...
6
Synthesis and Antimicrobial Activity of Fluorine Containing Pyrazole-clubbed Dihydropyrimidinones
... inhibition at 12.5 µg/ml flaunted for S. pyogenes in compound 4b having fluoro group at ortho position. MIC values of antifungal activity were observed against C. albicans, A. niger and A. clavatus by ...
11
Biological evaluation and structure activity relationship of 9 methyl 1 phenyl 9H pyrido[3,4 b]indole derivatives as anti leishmanial agents
... on ortho position slightly increased the anti-leishmanial activity, meta substitution resulted in drastic decline in ...meta position has significantly increased the inhibition potency against tested ...
8
Ethyl 3 (2 ethoxy 2 oxoethoxy) 6 (trifluoromethyl)furo[3,2 c]quinoline 2 carboxylate
... While the former contacts are supported by the hydrogen atom in ortho position to the trifluoromethyl group as the donor and one of the double bonded oxygen atoms as the acceptor, the C–[r] ...
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