Reaction Products of β -Aryloxypropionic Acids with Formaldehyde in Polyphosphoric Acid
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چکیده
منابع مشابه
Studies of the Reaction of Various 1,2-Disubstituted Benzenes with Crotonic Acid in Polyphosphoric Acid
H a m i s h G . G r a n t * Department o f Organic Chemistry, University o f Adelaide G . P . O . B o x 498, South Australia 5001 Z. Naturforsch. 34b , 728-733 (1979); received N o v e m b e r 27, 1978 5,6-Disubstituted Indanl -ones , Crotonic Ac id , Po lyphosphor i c Ac id , 1-Methyl Benzofurocyc lopentan-3-one, 1 3C N M R The reaction of several 1,2-disubstituted benzenes with crotonic acid ...
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where H-H-C and H-D-C are weak bonds and make a negligible contribution, leads to a value of -2 kcal. Therefore, E5-E2=1 kcal compared with the experimental value of 1.0 kcal. The preexponential factor for this pair of isotopic reactions can be calculated from the difference in the entropies of activation. Using the same loose complex as above and applying the expression derived by Bigeleisens ...
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ژورنال
عنوان ژورنال: NIPPON KAGAKU KAISHI
سال: 1973
ISSN: 2185-0925,0369-4577
DOI: 10.1246/nikkashi.1973.1621