EP0283261A2 — Herbicidal substituted cyclic diones
Assigned to Syngenta Ltd · Expires 1988-09-21 · 38y expired
What this patent protects
A compound of formula (I): <CHEM> or a salt, enamine, acylate, sulphonate carbamate or ether derivative thereof; wherein X, X<1> and X<2> are independently oxygen or sulphur, R<1> is an optionally substituted heterocyclic or cycloalkyl group, and Y is an o…
USPTO Abstract
A compound of formula (I): <CHEM> or a salt, enamine, acylate, sulphonate carbamate or ether derivative thereof; wherein X, X<1> and X<2> are independently oxygen or sulphur, R<1> is an optionally substituted heterocyclic or cycloalkyl group, and Y is an optionally substituted C2-C4 alkylene group which is optionally interposed by an oxygen atom, a group <CHEM> or an optionally mono-substituted nitrogen atom, wherein p is 0, 1 or 2, s is 0 or 1 and R<b> is alkyl or alkoxy; provided that when X, X<1> and X<2> are oxygen, R<1> is not pyridyl or pyrimidinyl. Processes for the preparation of these compounds and herbicidal compositions containing them are also described and claimed.
Drugs covered by this patent
- Velsipity (Etrasimod Arginine) · Pfizer Inc.
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
Track this patent
Get a daily-checked alert when vulnerability score, expiry, classification, or assignee changes. Email, Slack, or Teams delivery. Pro: 50 watches, Free: 3.