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DEGRADATION OF FLUORODIFEN‐1′‐ 14 C BY PEANUT SEEDLING ROOTS
Author(s) -
EASTIN E. F.
Publication year - 1971
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/j.1365-3180.1971.tb00987.x
Subject(s) - seedling , ether , chemistry , arachis hypogaea , degradation (telecommunications) , thin layer chromatography , nitro , ring (chemistry) , medicinal chemistry , stereochemistry , horticulture , organic chemistry , biology , telecommunications , alkyl , computer science
Summary. Degradation of p ‐nitrophenyl‐α,α,α:‐trifluoro‐2‐nitro‐ p ‐tolyl ether (fluorodifen) labelled with 14 C in the 1 position of the p ‐nitrophenyl ring (1′‐ 14 C) proceeded rapidly in peanut ( Arachis hypogaea L. cv. Starr) seedling roots. All degradation products were present after only 2 h. The major degradation products for fluorodifen‐1′‐ 14 C were the water‐soluble compounds p ‐nitrophenol and Unknown I, a polar compound or complex which remained on the origin during thin‐layer chromatography. Minor products included p ‐nitrophenyl‐α,α,α‐trifluoro‐2‐amino‐ p ‐tolyl ether, p ‐aminophenyl‐α,α,α‐trifluoro‐2‐nitro‐ p ‐tolyl ether and traces of p ‐aminophenol. No p ‐aminophenyl‐α,α,α‐trinuoro‐2‐amino‐ p ‐tolyl ether was detected. The p ‐aminophenol previously reported [ PL Physiol., Lancaster , 44,1397‐1401 (1969)] was not p ‐aminophenol, but primarily Unknown I with a possible trace of p ‐aminophenol. Fluorodifen continued to be absorbed throughout the 72‐h treatment period.