3-ARYL-5, 6-DIHYDRO-1, 4, 2-OXATHIAZINES AND THEIR OXIDES

摘要

Disclosed are derivatives of 3-aryl-5,6-dihydro-1,4,2-oxathi-azines and their oxides for use as herbicides, fungicides, plant dessicants and defoliants in agricultural and biocidal applications. Also disclosed are methods of making these compounds. The compounds have the formula wherein n = 0 , 1 or 2 R1 = hydrogen, C1-C4 linear or branched alkyl or benzyl R = phenyl or naphthyl phenyl substituted with 1-2 of the following groups: hydroxyl morpholinocarbonyl halo amino C1-C12 alkyl nitro C5-C6 cycloalkyl cyano trihalomethyl dioxolanyl phenyl pyridinyl C1-C5 alkoxy or alkylthio thienyl provided n is 0 or 1 tetrahydropyranyloxy furanyl phenoxy furanyl substituted with 1-3 of C2-C5 alkylcarbonyl the following groups: phenylcarbonyl C1-C4 alkyl C1-C4 alkylsulfinyl C2-C5 alkoxycarbonyl. C1-C4 alkylsulfonyI carboxy or its alkali metal salt C2-C5 alkoxycarbonyl C2-C5 alkylaminocarbonyl phenylaminocarbonyl tolylaminocarbonyl