Tetrahedron

Modified photobehavior of carboxylic acid derivatives induced by protonation

…, MJ Castello, MA Miranda, A Simon-Fuentes

Index: Amat, Ana M.; Asensio, Gregorio; Castello, Maria J.; Miranda, Miguel A.; Simon-Fuentes, Antonio Tetrahedron, 1987 , vol. 43, # 5 p. 905 - 910

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Citation Number: 5

Abstract

A series of carboxylic acid derivatives 1–6 containing a second interacting function have been converted into the corresponding O-protonated species or acylium ions upon treatment with 96% sulfuric acid or oleum, respectively, at room temperature. The resulting stable cations have been spectroscopically characterized and submitted to irradiation. Cis-trans photoisomerization was observed in the ionic speciesderived from trans-crotonic, fumaric ...

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