Photochemical behaviour of the systemic fungicide carboxin.
Irradiation of carboxin (1) with a 500 W UV lamp (filter Pyrex) in CH3CN leads to the products 3, 5-8, 12-14 depending upon the reaction conditions. All photo-products were isolated and characterized. Photooxidation occurred even if unsensitized, while photoalteration was very slow in the absence of oxygen. The main oxygenated-products 3 and 13 were also recovered under biomimetic conditions by exposure of an aqueous solution of 1 to sunlight.
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
Cermola
Flavio
F
De Lorenzo
Fulvio
F
Graziano
Maria Liliana
ML
Caliendo
Barbara
B
D000383:Agriculture; D002261:Carboxin / Q000737:chemistry* / Q000493:pharmacokinetics; D005659:Fungicides, Industrial / Q000737:chemistry* / Q000493:pharmacokinetics; D006801:Humans; D010777:Photochemistry; D010944:Plants / Q000378:metabolism; D013472:Sunlight; D014466:Ultraviolet Rays
D005659:Fungicides, Industrial; D002261:Carboxin