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US 3,937,702 AGranted
2,3-Dihydro-2-aminobenzofuran-5-yl sulfonates
AssigneeFisons Limited
InventorsPeter Stuart Gates, John Gillon, David Thomas Saggers
Life of this patent
Estimating the term…
Abstract
2,3-Dihydro-benzofuranyl-5-esters, particularly esters of alkyl sulphonic acid, which possess physiological activity, being particularly useful as herbicides and plant growth regulants.
Claims13
A benzofuranyl compound of the formula ##EQU5## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and are selected from the group consisting of hydrogen and alkyl of 1 to 6 carbon atoms,
- R.sup.4 is --NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 are the same or different members selected from the group consisting of alkyl of 1-4 carbon atoms and halogen substituted alkyl of 1 to 4 carbon atoms, or R.sup.6 and R.sup.7 together with the nitrogen to which they are attached form a heterocyclic ring selected from the group consisting of piperidino, morpholino, methyl piperazino and pyrrolidino,
- R.sup.9 is a member selected from the group consisting of alkyl of 1 to 4 carbon atoms, alkyl of 1 to 4 carbon atoms substituted by halogen, alkyl or 1 to 4 carbon atoms substituted by alkoxy of 1 to 6 carbon atoms, phenyl and phenyl substituted by alkyl of 1 to 4 carbon atoms, and
- R.sup.10, r.sup.11 and R.sup.12 are the same or different and are selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms and halogen.
A benzofuranyl compound of the formula ##EQU7## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and are hydrogen or alkyl of 1 to 6 carbon atoms;
- R.sup.6 and R.sup.7 are the same or different and are alkyl of 1 to 4 carbon atoms or together with the nitrogen atom to which they are attached form a member of the group of morpholino, pyrrolidino, piperidino or methylpiperazino;
- R.sup.9 is alkyl of 1 to 4 carbon atoms, alkyl of 1 to 4 carbon atoms monosubstituted by chlorine or alkyl of 1 to 4 carbon atoms monosubstituted by alkoxy of 1 to 6 carbon atoms;
- and
- R.sup.10, r.sup.11 and R.sup.12 are the same or different and are hydrogen, alkyl of 1 to 4 carbon atoms or chlorine.
1 more element
Dependencies are inferred from the claim text.