Ring V reactions of chlorophylls and pheophytins with amines |
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| Authors: | F.C. Pennington N.B. Boettcher J.J. Katz |
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| Affiliation: | 1. Chemistry Department, Coe College, Cedar Rapids, Iowa, USA;2. Chemistry Division, Argonne National Laboratory, Argonne, Illinois, USA |
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| Abstract: | A study of the kinetics of the reaction of chlorophyll a with propylamine and isobutylamine indicates a low activation energy (～5 kcal) and high negative entropy (～60 eu). Propylamine and isobutylamine react with Ring V cleavage more readily with chlorophyll b and pheophytin b compounds than with the a compounds, and more readily with the pheophytins than with chlorophylls. |
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