Chemistry: fertilizers – Processes and products – Forms or conditioning
Patent
1989-06-15
1990-07-03
Hollrah, Glennon H.
Chemistry: fertilizers
Processes and products
Forms or conditioning
549346, 549349, A01N 4324
Patent
active
049387901
ABSTRACT:
Dibenzo[d,g][1,3]dioxocin-6-carboxylic acids substituted by methyl or ethyl or a moiety --CH.sub.2 CH.sub.2 -- at the 12-position and optionally substituted at other positions, such as methyl 4'-chlorospiro(cyclopropane-1,12'(12'H)-dibenzo[d,g][1,3]dioxocin)-6'-carb oxylic acid, and their agriculturally acceptable esters, amides, and salts are useful for the control of undesirable vegetation. The 1,1-diarylcyclopropane intermediates required for the spirocyclopropane compounds can be prepared from appropriately substituted 1,1-diarylethene procursors by reaction with phenylthiomethyl lithium reagent.
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J. M. Grisar et al. J. Medicinal Chemistry, 15, 1273-1278 (1972).
H. Linser, Chemical Abstracts, 53,20313f, 1959.
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Marlowe Charles
Ray Patricia G.
Renga James M.
Riley Brian K.
Smith Michael G.
Hollrah Glennon H.
Osborne D. Wendell
Owens Amelia A.
The Dow Chemical Company
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