caa a22 4500 465797105 CHVBK 20180323112041.0 cr unu---uuuuu 170327e19900201xx s 000 0 eng 10.1007/BF02540640 doi (NATIONALLICENCE)springer-10.1007/BF02540640 Sulfonation studies of monoisomeric di- and trialkylbenzenes [Elektronische Daten] [Roger Grey, Albert Chan] Sulfonation studies were conducted on a series of monoisomerically pure di- and trialkylbenzenes in order to determine the regioselectivity of sulfonation and how the selectivity varies with structural changes. Sulfur trioxide, because of its commerical significance, was investigated as the primary sulfonating agent. Lewis base adducts of sulfur trioxide and other sulfonating agents were also investigated for comparison. The studies demonstrated, in a quantitative manner, the tendency of the sulfonation to occur para to alkyl substituents. In one class of the alkylbenzenes investigated, 1,3,4-alkyl dimethylbenzene, the sulfonation which occurred at the position para to the 3-methyl group ranged in selectivity from 87-99%, even though this position, which is ortho to the larger alkyl group, was much less favorable from steric considerations than the position ortho to the 4-methyl group. The determination of the position of sulfonation by a combination of nuclear magnetic resonance and high pressure liquid chromatographic techniques is discussed. AOCS Press, 1990 Grey Roger ARCO Chemical Company, 38O1 West Chester Pike, 19073, Newton Square, PA aut Chan Albert ARCO Oil and Gas Company, 2300 West Plano Parkway, 75075, Plano, TX aut Journal of the American Oil Chemists' Society Springer-Verlag 67/2(1990-02-01), 132-141 0003-021X 67:2<132 1990 67 11746 https://doi.org/10.1007/BF02540640 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02540640 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Grey Roger ARCO Chemical Company, 38O1 West Chester Pike, 19073, Newton Square, PA aut NATIONALLICENCE 700 1- Chan Albert ARCO Oil and Gas Company, 2300 West Plano Parkway, 75075, Plano, TX aut NATIONALLICENCE 773 0- Journal of the American Oil Chemists' Society Springer-Verlag 67/2(1990-02-01), 132-141 0003-021X 67:2<132 1990 67 11746 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer