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Synthesis and herbicidal activity of new oxazinone herbicides with a long‐lasting herbicidal activity against Echinochloa oryzicola
Author(s) -
Ikeguchi Masahiko,
Sawaki Masahiko,
Nakayama Hitoshi,
Kikugawa Hiroshi,
Yoshii Hiroshi
Publication year - 2004
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.900
Subject(s) - echinochloa , isopropyl , chemistry , stereochemistry , agronomy , weed , organic chemistry , biology
Chemical modification of the herbicide 1‐[2‐(benzothiazol‐2‐yl)isopropyl]‐4‐methyl‐3‐phenyl‐5 H ‐pyrrolin‐2‐one (MI‐2826) has revealed a new oxazinone herbicide, 3‐[2‐(7‐chlorobenzothiazol‐2‐yl)isopropyl]‐2,3‐dihydro‐6‐methyl‐5‐phenyl‐4 H ‐1,3‐oxazin‐4‐one (MI‐3069), for use in paddy fields. In comparing the phyototoxicity of the two herbicides to transplanted rice, the latter was superior to the former and kept the same predominant characteristic to control Echinochloa oryzicola Vasin for a long period of time owing to its long‐lasting residual effect. Copyright © 2004 Society of Chemical Industry