Effects of sensitizers on the photodegradation of the systemic fungicide triadimenol.
The photochemical behaviour of triadimenol (1) under various conditions has been examined. Significant degradation is obtained only in the presence of electron-acceptor sensitizers as 9,10-dicyanoanthracene or 2,4,6-triphenylpyrylium tetrafluoroborate, and long irradiation times are required. 1H-1,2,4-Triazole (2), 4-chlorophenyl formate (3), 4-chlorophenol (4), 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1H-1,2,4-triazol-1-yl)butan-2-one (5), 4-chlorophenyl 2,2-dimethylpropanoate (6) and 4-chlorobenzoic acid (7) were identified as photoproducts by NMR and GC-MS.
Iesce
Maria Rosaria
MR
Dipartimento di Chimica Organica e Biochimica, Università degli Studi di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, via Cinthia, I- 80126 Napoli, Italy. iesce@unina.it
Graziano
Maria Liliana
ML
Cermola
Flavio
F
Montella
Stefania
S
di Gioia
Lucrezia
L
Stasio
Ciriaco
C
D005659:Fungicides, Industrial / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D009682:Magnetic Resonance Spectroscopy; D010777:Photochemistry; D014230:Triazoles / Q000737:chemistry*
D005659:Fungicides, Industrial; D014230:Triazoles; C032910:triadimefon