Dimepiperate, S-(1-methyl-1-phenylethyl) piperidine-1-carbothioate (I) was degraded in aqueous solution by ultraviolet irradiation into piperidine (II), alpha-methylstyrene (III), acetophenone (IV), and formaldehyde (V). The reaction followed first-order kinetics. In sunlight the reaction occurred only in the presence of a sensitiser and afforded the same four photolytic degradation products. In the absence of oxygen the herbicide was converted much more rapidly, but yielded only (II) and (III) as products. A mechanism which accounts for the formation of the photoproducts is proposed.

PHOTOLYSIS OF DIMEPIPERATE IN AQUEOUS-SOLUTION / Pusino, Alba; Gessa, C; Liu, Wp. - In: PESTICIDE SCIENCE. - ISSN 0031-613X. - 34:3(1992), pp. 269-271. [10.1002/ps.2780340313]

PHOTOLYSIS OF DIMEPIPERATE IN AQUEOUS-SOLUTION

PUSINO, Alba;
1992-01-01

Abstract

Dimepiperate, S-(1-methyl-1-phenylethyl) piperidine-1-carbothioate (I) was degraded in aqueous solution by ultraviolet irradiation into piperidine (II), alpha-methylstyrene (III), acetophenone (IV), and formaldehyde (V). The reaction followed first-order kinetics. In sunlight the reaction occurred only in the presence of a sensitiser and afforded the same four photolytic degradation products. In the absence of oxygen the herbicide was converted much more rapidly, but yielded only (II) and (III) as products. A mechanism which accounts for the formation of the photoproducts is proposed.
1992
PHOTOLYSIS OF DIMEPIPERATE IN AQUEOUS-SOLUTION / Pusino, Alba; Gessa, C; Liu, Wp. - In: PESTICIDE SCIENCE. - ISSN 0031-613X. - 34:3(1992), pp. 269-271. [10.1002/ps.2780340313]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/49134
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