Quarterly Journal of the Chemical Society of London, Part 2, Pages 1-1256 |
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Page 128
... compounds . By a different method involving contribu- tions of various atoms to the proton chemical shifts , he obtained values of the ring current in furan , pyrrole , and thiophen of 46 , 59 , and 75 % of the benzene value , and ...
... compounds . By a different method involving contribu- tions of various atoms to the proton chemical shifts , he obtained values of the ring current in furan , pyrrole , and thiophen of 46 , 59 , and 75 % of the benzene value , and ...
Page 314
Chemical Society (Great Britain). Heterocyclic Organoboron Compounds . Part II.1 Some 2 - Aryl - benzo- and -naphtho - 1,3,2 - di - azaborolines and -oxaborolens * Some heterocyclic boron compounds have been prepared by reacting o ...
Chemical Society (Great Britain). Heterocyclic Organoboron Compounds . Part II.1 Some 2 - Aryl - benzo- and -naphtho - 1,3,2 - di - azaborolines and -oxaborolens * Some heterocyclic boron compounds have been prepared by reacting o ...
Page 315
... compounds melting- points are in the order o- < phenyl < m- < p- ( Table 7 ; Table 3 in ref . 1 ) . The exceptional properties of the o - nitrophenyl compounds indicate that in the solid state intramolecular bonding occurs between the ...
... compounds melting- points are in the order o- < phenyl < m- < p- ( Table 7 ; Table 3 in ref . 1 ) . The exceptional properties of the o - nitrophenyl compounds indicate that in the solid state intramolecular bonding occurs between the ...
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Common terms and phrases
absorption alkaline alkyl Amer amine anhydride anion aqueous aromatic atom b₁ benzene bond boron trifluoride bromide calculated carbon tetrachloride cation Chem chemical shifts Chemistry chloride coefficient compounds concentration conformation corresponding cyclohexane decomposition derived diazotisation dimethylformamide dioxan dipole effect electron equation equilibrium ester ether experimental Figure first-order formamide fraction H₂O hydration hydrogen hydrogen-bonding hydrolysis hydroxide initial iodide ionisation isomer k₂ kcal ketone kinetic Le Fèvre magnetic resonance measurements methanol methoxide methyl methylene mixture molar Kerr constants mole mole-¹ molecular molecules nitrogen nitrosation nitrous nucleophilic observed obtained oxide oxime oxygen perchloric acid phenyl phosphate Phys polarisability protons pyridine R. J. W. Le Fèvre radical rate constants ratio reaction reactivity recrystallised ring shown sodium sodium hydroxide solution solvation solvent species spectra spectrum structure substituent sulphone Table temperature ultraviolet values