INVESTIGADORES
ERRA BALSELLS Rosa
artículos
Título:
Understanding the role played by protic ionic liquids (PILs) and the substituent effect for enhancing the generation of Z-cinnamic acid derivatives
Autor/es:
ROCÍO B. RODRÍGUEZ; RAMIRO L. ZAPATA; MARIA L SALUM; ERRA-BALSELLS, ROSA
Revista:
Photochemical and Photobiological Sciences
Editorial:
ROYAL SOC CHEMISTRY
Referencias:
Lugar: CAMBRIDGE; Año: 2020 vol. 19 p. 1 - 12
ISSN:
1474-905X
Resumen:
Photoisomerization of a series of substituted E-cinnamic acids in MeCN in their acid forms and as theircorresponding protic ionic liquids (PILs) with light of 300 nm is studied. The nature, strength, number, andposition effects of substituents on the photochemical behavior of E-cinnamic derivatives are investigated.The photosensitization of the reaction in the presence of Michler?s ketone is also studied at 366 nm and itdemonstrates that the triplet-excited state is involved in the reaction. As the presence of n-butylamineneeded to form the PILs significantly increases the photoproduct yields in all cases, the role of the PILs isalso discussed. Thus, understanding of these fundamental aspects has allowed us to establish an excellentand practical synthetic protocol for successfully synthesizing Z-cinnamic acids.