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:
Jun. 01, 1982
Filed:
Aug. 01, 1980
Tobias O Yellin, Wallingford, PA (US);
Derrick M Mant, Bramhall, GB;
Imperial Chemical Industries PLC, London, GB;
ICI Americas Inc., Wilmington, DE (US);
Abstract
The invention relates to a thiadiazole derivative of the formula I: ##STR1## in which Y is O, S, CH.sub.2, SO or a direct bond; m is 0 to 4 and n is 1 to 4 provided that when Y is S, O or SO m is 1 to 4, and when Y is O or SO n is 2 to 4; R.sup.1 is H or (C.sub.1-10)alkyl; A is 3,4-dioxocyclobuten-1,2-diyl or C.dbd.Z in which Z is O, S, NCN, NNO.sub.2, CHNO.sub.2, NCONH.sub.2, C(CN).sub.2, NCOR.sup.2, NCO.sub.2 R.sup.2, NSO.sub.2 R.sup.2 or NR.sup.3 in which R.sup.2 is (C.sub.1-6)alkyl or (C.sub.6-12)aryl and R.sup.3 is H or (C.sub.1-6)alkyl; B is (C.sub.1-6)alkoxy, (C.sub.1-6)alkylthio or NR.sup.4 R.sup.5 in which R.sup.4 and R.sup.5 are independently H, (C.sub.1-10)alkyl, C.sub.3-6 (alkenyl), (C.sub.3-6)alkynyl, (C.sub.2-6)(primary hydroxy)alkyl, (C.sub.2-6)(primary amino)alkyl or (C.sub.3-6)cycloalkyl or R.sup.4 and R.sup.5 are joined to form a 5- or 6- membered saturated ring optionally containing an additional O or NH: and the salts thereof.