Quarterly Journal of the Chemical Society of London, Volume 1 |
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Page 120
... bromination . TABLE 8 Bromination of para - substituted anilines ( Initial concn . Br- = 5.00 0.008 × 10-2м ) Substnt . PK Ho 子 log ka +0 Om F 4.65 -3.41 0.252 7.43 0.34 Br 3.86 -3.41 1.520 7.43 0.39 Cl 3.92 -3.41 1.360 7.53 0.37 Me ...
... bromination . TABLE 8 Bromination of para - substituted anilines ( Initial concn . Br- = 5.00 0.008 × 10-2м ) Substnt . PK Ho 子 log ka +0 Om F 4.65 -3.41 0.252 7.43 0.34 Br 3.86 -3.41 1.520 7.43 0.39 Cl 3.92 -3.41 1.360 7.53 0.37 Me ...
Page 171
... bromination of thiophen was compared with that of mesitylene . The mechanism of the latter reaction is shown in Scheme 2. Formation of the highly charged intermediate ( III ) renders the reaction sensitive to salt concentration . Table ...
... bromination of thiophen was compared with that of mesitylene . The mechanism of the latter reaction is shown in Scheme 2. Formation of the highly charged intermediate ( III ) renders the reaction sensitive to salt concentration . Table ...
Page 172
... bromination of 2,5 - dimethyl- naphthalene 19 and in the side - chain bromination of hexamethylbenzene.20 In the present case sodium acetate has a smaller accelerating effect than lithium perchlorate ( see Figure 3 ) , a result ...
... bromination of 2,5 - dimethyl- naphthalene 19 and in the side - chain bromination of hexamethylbenzene.20 In the present case sodium acetate has a smaller accelerating effect than lithium perchlorate ( see Figure 3 ) , a result ...
Contents
Physical organic chemistry | 1 |
Topochemistry Part XXX Crystal and molecular structures of chalcone | 11 |
Conformational studies Part I Crystal and molecular structures of cis12dipchlorobenzoyl and cis | 17 |
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A. R. Katritzky alcohol alkyl Amer anion aqueous aromatic ation axial benzene bond bromination calculated carbanion carbon acids carbon atom carbon tetrachloride carbonyl catalyst Chem chemical shifts Chemistry chloride complex compounds concentration conformation correlation coupling constants crystal cyclohexane derivatives difference dilute dimethyl sulphoxide dioxan electron elimination energy equation equatorial equilibrium ester ethanol ether experimental Figure fluorene formation fraction H₂O H₂SO hydrogen hydrolysis hydroxide indicators interaction intermediate ionisation isomer isomerization isotope effect k₁ k₂ kcal kcal./mole kinetic measured mechanism methyl mixture mole mole-¹ molecular molecule n.m.r. spectra nitration nitrogen nucleophilic observed obtained oxide oxime oxygen parameters phenyl Phys piperidine plot proton pyridines R. P. Bell radical rate constants ratio reaction reactivity ring shown shows sodium solution solvent spectrum structure substituents sulphuric acid t-butyl Table temperature Tetrahedron thiophen transition values