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:
Apr. 28, 1981
Filed:
Jun. 15, 1979
Takashi Tsuruoka, Saiwai-ku, Kawasaki-shi, Kanagawa 210, JP;
Akira Suzuki, Shibuya-ku, Tokyo 150, JP;
Kunitaka Tachibana, Isogo-ku, Yokohama-shi, Kanagawa 235, JP;
Kazuko Mizutani, Kanagawa-ku, Yokohama-shi, Kanagawa 221, JP;
Yasuharu Sekizawa, Shibuya-ku, Tokyo 150, JP;
Shigeharu Inouye, Midori-ku, Yokohama-shi, Kanagawa 227, JP;
Tetsuo Takematsu, Minemachi Utsunomiya-shi, Tochigi 320, JP;
Other;
Abstract
PCT No. PCT/JP78/00058 Sec. 371 Date June 15, 1979 Sec. 102(e) Date June 15, 1979 PCT Field Dec. 18, 1978 PCT Pub. No. WO79/00405 PCT Pub. Date July 12, 1979 This invention relates to a novel process for preparing D,L-2-amino-4-methylphosphinobutyric acid having herbicidal and antifungicidal activities which comprises subjecting acrolein to reaction with a dialkyl phosphonite to synthesize an acetal of an ester of 3-oxopropylmethylphosphinic acid; treating the thus obtained compound with an acid for deacetalization to obtain an ester of 3-oxopropylmethylphosphinic acid and then applying the Strecker's process used for amino synthesis to the thus obtained ester.