The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1992
Filed:
Mar. 14, 1990
Kengo Oda, Kanagawa, JP;
Koichi Moriyasu, Kanagawa, JP;
Kiyoshi Arai, Kanagawa, JP;
Kanji Tomiya, Kanagawa, JP;
Miura Tohru, Kanagawa, JP;
Makoto Nishida, Kanagawa, JP;
Masami Oyamada, Chiba, JP;
Akie Fujiwara, Kanagawa, JP;
Mitsui Toatsu Chemicals Incorporated, Tokyo, JP;
Abstract
4-Ethyl-3-(phenyl)-1-(3-trifluoromethylphenyl)-2-pyrrolidinones and corresponding compounds bearing a p-substituent on the 1-position phenyl group and/or a substituent on the 3-position phenyl group exhibit selective herbicidal activities against various weeds which cause problems in rice or upland fields, even at extremely low application rates. They can be prepared by reductive dehalogenation of a corresponding .alpha.-haloethyl substituted pyrrolidinone or reductive cyclization of a corresponding N-2-butenyl-N-(substituted phenyl)-haloacetyl-3-trifluoromethylaniline.