Quarterly Journal of the Chemical Society of London, Issue 15, Pages 777-1692 |
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Results 1-3 of 74
Page 790
... acetate ( I ) Ethyl acetate ( II ) Ethyl acetate ( enriched with 180 at the ether oxygen ) MeCO MeC180 16OEt 18 Et MeCO , Et 43 45 45 47 88 89 90 1000 2.2 157 0.37 60 3.3 0-53 1000 3.5 148 4.5 50 2.7 2.3 1000 5.8 162 4.5 50 2.3 2.0 ...
... acetate ( I ) Ethyl acetate ( II ) Ethyl acetate ( enriched with 180 at the ether oxygen ) MeCO MeC180 16OEt 18 Et MeCO , Et 43 45 45 47 88 89 90 1000 2.2 157 0.37 60 3.3 0-53 1000 3.5 148 4.5 50 2.7 2.3 1000 5.8 162 4.5 50 2.3 2.0 ...
Page 1037
... acetate . After washing with light petroleum , the ethyl acetate extract was submitted to successive liquid chromatography using alumina , silica gel , and Amberlite XAD - 2.7 The radioactive fractions having the same retention times as ...
... acetate . After washing with light petroleum , the ethyl acetate extract was submitted to successive liquid chromatography using alumina , silica gel , and Amberlite XAD - 2.7 The radioactive fractions having the same retention times as ...
Page 1539
... acetate under the same conditions , which we attribute to intramolecular general base catalysis ( 1 ) of the attack of water by the ionised carboxyl group . H2C ( 1 ) OAr -H 4 All the kinetic evidence is consistent with this mechanism ...
... acetate under the same conditions , which we attribute to intramolecular general base catalysis ( 1 ) of the attack of water by the ionised carboxyl group . H2C ( 1 ) OAr -H 4 All the kinetic evidence is consistent with this mechanism ...
Contents
11 August 1971 | 777 |
Electron Spin Resonance Studies of Stable Radicals Generated by Oxidation of sButyllithium with Transition | 878 |
O COPYRIGHT 1971 | 1044 |
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Common terms and phrases
absorption acetate acid Acta adduct alcohol alkaloids alkyl Amer angle anion aqueous aromatic atoms bands benzene carbon carbonyl catalyst cation CH₂ Chem chemical shifts Chemical Society Chim chloride cm-¹ co-ordination Comm complex compounds corresponding Crystal cyclic cyclopropyl D. H. R. BARTON Department of Chemistry derivatives deuterium dimethyl electron ester ether Figure formation formed gave give hydrogen hydrolysis i.r. spectrum ibid Inorg intermediate irradiation isolated isomer isomeric ketone ligand mechanism metal methanol methyl methylene mixture molecular molecule n.m.r. spectrum nitrogen nucleophilic observed obtained olefin orbitals oxidation oxygen Ph Ph phenyl phosphine photolysis Phys presence protons pyridine radical ratio react reaction rearrangement Received reduction reported resonance ring room temperature shown singlet sodium solution solvent species spectra spectroscopy stereochemistry structure studies substituted Summary synthesis Table Tetrahedron Letters thermal University X-ray yield