Quarterly Journal of the Chemical Society of London, Volume 1 |
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Page 253
... coupling constants have been found : Jax ± 9.92 , J'ax ± 7 · 12 , J △△ ± 9.36 , Jxx ± 0 · 10 , J'xx ± 14 · 03 , and J'xx ± 3.01 c./sec . Assignments of these coupling constants are discussed . Redox - transfer . Part VI.1 ...
... coupling constants have been found : Jax ± 9.92 , J'ax ± 7 · 12 , J △△ ± 9.36 , Jxx ± 0 · 10 , J'xx ± 14 · 03 , and J'xx ± 3.01 c./sec . Assignments of these coupling constants are discussed . Redox - transfer . Part VI.1 ...
Page 254
... coupling between the two vinylic fluorines ) is ex- ceptionally low in comparison with the normal cis vicinal coupling ( 30-60 c./sec . ) through a double bond in fluoroalkenes . Such a small coupling has been found only in few cases ...
... coupling between the two vinylic fluorines ) is ex- ceptionally low in comparison with the normal cis vicinal coupling ( 30-60 c./sec . ) through a double bond in fluoroalkenes . Such a small coupling has been found only in few cases ...
Page 524
... coupling is involved in the coupling between the protons at positions 4a and 10a . The trans - compound ( V ) has a fixed conformation and should lead to a direct measure- ment of Jaa . Decoupling experiments were necessary to observe ...
... coupling is involved in the coupling between the protons at positions 4a and 10a . The trans - compound ( V ) has a fixed conformation and should lead to a direct measure- ment of Jaa . Decoupling experiments were necessary to observe ...
Contents
Physical organic chemistry | 1 |
Aromatic reactivity Part XXXVIII Protodesilylation of 12dihydrobenzocyclobutene indan and tetralin | 12 |
Aromatic reactivity Part XL Additional substituent effects in protodetrimethylsilylation | 21 |
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absorption acetic acid Acta alcohol alkyl Amer amine angles anion aqueous aromatic ation benzene bond bromide calculated carbon tetrachloride CH₂ Chem chemical shifts Chemistry Chim chloride CO₂H coefficients compounds concentration conformation corresponding coupling constants decomposition derived di-imine dioxan dipole effect electron equation esters ethanol ether experimental Figure first-order fluorine formation formed hydrogen hydrolysis hydroxide hypochlorous acid interaction intermediate iodide irradiation isomer isomerisation isopropyl k₁ ketone kinetic measured mechanism mercuric mesitylene method methyl mixture mole mole-¹ molecular molecule n.m.r. spectra nitration nitrogen observed obtained olefin oxidation oxygen peaks peroxide phenyl Phys plot polymer proton radical rate constants ratio reactants reaction reactivity reduced relative resonance ring salts showed shown similar singlet sodium solution solvent solvolysis spectrum steric steric effect structure substituent sulphoxide t-butyl Table temperature titanium(III triethyl phosphite values