C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/351.1, 260/5
C07D 321/12 (2006.01) A01N 43/24 (2006.01) C07C 43/20 (2006.01) C07C 255/54 (2006.01) C07C 323/20 (2006.01)
Patent
CA 2018986
ABSTRACT Dibenzo[d,g][1,3]dioxocin-6-carboxylic acids substituted by methyl or ethyl or a moiety -CH2CH2- at the 12-position and optionally substituted at other positions, such as methyl 4'-chlorospiro(cyclopropane- -1,12'(12'H)-dibenzo[d,g][l,3]dioxocin)-6'-carboxylic 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.
Marlowe Charles K.
Ray Patricia G.
Renga James M.
Riley Brian K.
Smith Michael G.
Smart & Biggar
The Dow Chemical Company
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