Quarterly Journal of the Chemical Society of London, Volume 1 |
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Page 266
... reduced at a mercury cathode only at very negative potentials.3 When this bond is conjugated to other groups the potential for reduction becomes less negative and in 9 - benzylidene fluorene and 3 - phenyl- coumarin 5 the olefin bond is ...
... reduced at a mercury cathode only at very negative potentials.3 When this bond is conjugated to other groups the potential for reduction becomes less negative and in 9 - benzylidene fluorene and 3 - phenyl- coumarin 5 the olefin bond is ...
Page 398
... reduced by oxygen , but there was a small increase in the intensity of the resonance for this radical which occurs at g = 2-0132 . With methanol , the intensity of the spectrum of the radical ⚫CH2OH was reduced by ca. 20 % and the ...
... reduced by oxygen , but there was a small increase in the intensity of the resonance for this radical which occurs at g = 2-0132 . With methanol , the intensity of the spectrum of the radical ⚫CH2OH was reduced by ca. 20 % and the ...
Page 430
... reduced pressure . Some solid was precipitated , and was filtered off . The residue was extracted with hot petroleum ( b.p. 120-140 ° ) and was combined with the solid and chromatographed on a short column of silica gel . The eluate was ...
... reduced pressure . Some solid was precipitated , and was filtered off . The residue was extracted with hot petroleum ( b.p. 120-140 ° ) and was combined with the solid and chromatographed on a short column of silica gel . The eluate was ...
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 activation added addition alcohol Amer analysis angles appears aqueous atom base benzene bond bromide calculated carbon carbon tetrachloride Chem chemical chloride compared complex compounds concentration conformation constants containing corresponding coupling derived described determined DISCUSSION effect electron energy equation esters ethanol ether expected experimental experiments factor Figure followed formation formed further gave give given hydrogen hydrolysis increase indicate initial intermediate involving kinetic less measured mechanism method methyl mixing mixture mole molecular molecule nitration observed obtained occurs organic oxidation oxygen peaks peroxide Phys plot position possible prepared present pressure proton radical rate constants ratio reaction reactivity reduced relative reported requires resonance respectively ring salts shifts showed shown similar sodium solution solvent spectra spectrum structure studied substituent suggested Table temperature values yield