Extra polar interactions in the transition states of the cross cycloadditions of differently substituted trifluorostyrenes *** of the cycloaddition of p-trifluoromethyltrifluorostyrene and p-methoxytrifluorostyrcne
Extra polar interactions in the transition states of the cross cycloadditions of differently substituted trifluorostyrenes *** of the cycloaddition of p-trifluoromethyltrifluorostyrene and p-methoxytrifluorostyrcne作者机构：Shanghai Institute of Organic Chemistry 345 Ling Ling Lu Shanghai 200032 China
出 版 物：《Acta Chimica Sinica(English Edition)》 (化学学报(英文版))
年 卷 期：1988年第6卷第4期
页 面：364-371页
主 题：Extra polar interactions in the transition states of the cross cycloadditions of differently substituted trifluorostyrenes 1.Kinetics of the cycloaddition of p trifluoromethyltrifluorostyrene and p methoxytrifluorostyrcne
摘 要：The rate constants for cross-cycloaddition and homo-cycloaddition reactions of p-me-thoxytrifluorostyrene and p-trifluoromethyltrifluorostyrene have been measured at 110-160℃ withthe help of the“KINETICS-Icomputer *** data,particularly the ■ function values(1.4-1.9)which are defined by eq 10 and related to the tendency of cross-cycloaddition,reveal thatvery likly there is an extra polar interaction in the transition state of the cross-cycloaddition reactionbetween donor-and acceptor-substituted trifluorostyrenes.
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