Abstract:
PROBLEM TO BE SOLVED: To obtain a new compound having herbicidal property and useful as an active ingredient of a herbicide preferably in the form of solution capable of directly scattering, emulsion, paste, oil dispersion, etc. SOLUTION: This compound is shown by formula I [X is O or S; R1 is H, hydroxyl, a 1-6C (substituted)alkyl or the like; R2 and R3 are each nitro, cyano, a halogen, H or the like; but in the case where X is O and R2 and R3 are each phenyl, R1 is not phenyl or H and all of R1 to R3 are not methyl or the like], for example N-isopropylthiophene-3,4-carboximide. For example, a compound of the formula I can be produced by reacting (A) a carboxylic acid anhydride of formula II with (B) an amine of the formula H2N-R1 in a molar ratio of the component A to the component B ranging from 0.9 to 1.5, (C) if necessary in the presence of an acid catalyst (ex. aromatic sulfonic acid), in a solvent at 0-150 deg.C, preferably 20-100 deg.C, preferably while removing a preparing reaction water or the like.
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject compound of which oxide content is decreased by adding a metal salt to form a complex thereof with trisubstituted phosphine and separating the complex formed from the mixture. SOLUTION: A reducing agent such as a trisubstituted phosphine represented by the formula (R is H, a 1-6C alkyl; R and R are each H, a 1-6C alkyl; R and R are each H, a 1-6C alkyl; R -R are each H, a 1-6C haloalkyl) is oxidized to form the oxide. A metal salt of an alkali metal is added to the oxide in a range from 0.25-5 molar equivalent based on the oxide to effect the Mitsunobu reaction. In the reaction, the reaction mixture is kept at the temperature ranging from 0 to 120 deg.C for 16 hours at maximum, then cooled down in the temperature range from -10 deg.C - the ambient temperature to form complex. The remaining complex is separated by filtration or centrifugation to decrease the oxide.
Abstract:
A substituted 2-phenylpyridine of formula (I), where Ar is a radical (A) or (B) and where the ring R is a fused heterocyclic ring which, together with the phenyl ring, forms one of the following bicyclic rings (a) to (l) and the N-oxides of (I) and the agriculturally utilizable salts of (I) if these exist. Use: herbicides, desiccation/defoliation of plants.
Abstract:
The present invention relates to a process for isomerizing reactant allyl alcohols to product allyl alcohols in the presence of a catalyst, wherein the reactant allyl alcohol is rearranged to product allyl alcohol in semicontinuous or continuous mode in a catalyst-containing suitable reactor. In particular, the process according to the invention is used to prepare linalool from Geraniol and/or nerol.
Abstract:
PCT No. PCT/EP94/02264 Sec. 371 Date Jan. 11, 1996 Sec. 102(e) Date Jan. 11, 1996 PCT Filed Jul. 11, 1994 PCT Pub. No. WO95/02590 PCT Pub. Date Jan. 26, 1995A substituted 2-phenylpyridine of the formula I where Ar is and the N-oxides of I and the agriculturally utilizable salts of I where these exist. Use: herbicides; desiccation/defoliation of plants.
Abstract:
PCT No. PCT/EP95/02584 Sec. 371 Date Jun. 30, 1997 Sec. 102(e) Date Jun. 30, 1997 PCT Filed Jul. 4, 1995 PCT Pub. No. WO96/02518 PCT Pub. Date Feb. 1, 1996Substituted cinnamic oxime derivatives I and cinnamic hydroxamide derivatives II (R1=halogen, NO2, CN, CF3; R2=H, halogen; R3=H, halogen, C1-C6-alkyl, C1-C6-haloalkyl, C3-C6-cycloalkyl, C3-C6-alkenyl, C3-C6-alkynyl, hydroxy-C1-C6-alkyl; R4=H, halogen, CN, C1-C6-alkyl, C1-C6-haloalkyl or R3+R4=chemical bond; Y=-O-, -S-, -O-CO-, -O-SO2- or chemical bond; Y'=-O- or -S-; R5=unsubst. or subst. C1-C6-alkyl or C1-C6-haloalkyl; C3-C6-cycloalkyl, C3-C6-alkenyl, C3-C6-alkynyl, unsubst. or subst. phenyl or phenyl-C1-C6-alkyl, or, if Y is -O-, -S- or a chemical bond, is (C1-C6-alkyl)carbonyl or (C1-C6-alkoxy)carbonyl; or, if Y is a chemical bond, is hydrogen or halogen; R5'=R5, H or (C1-C6-haloalkyl)carbonyl; R6=H, C1-C6-alkyl, C1-C6-haloalkyl, C3-C6-cycloalkyl, C3-C6-alkenyl, C3-C6-alkynyl, hydroxy-C1-C6-alkyl, C1-C6-alkoxy-C1-C6-alkyl, C1-C6-alkylthio-C1-C6-alkyl, cyano-C1-C6-alkyl, (C1-C6-alkoxy) carbonyl-C1-C6-alkyl, (C1-C6-alkyl) carbonyl-C1-C6-alkyl, (C1-C6-alkyl)carbonyloxy-C1-C6-alkyl or unsubst. or subst. phenyl-C1-C6-alkyl; or, if Y is oxygen or sulfur, R5+R6 together=unsubst. or subst. C1-C3-alkylene; Cyc=N-(3,4,5,6-tetrahydrophthalimido) or X1, X2=oxygen or sulfur; R7=H, C1-C6-alkyl, C1-C6-haloalkyl, NH2; R8, R9=H, halogen, C1-C6-alkyl, C1-C6-haloalkyl or unsubst. or subst. phenyl); and salts of I and II. Use: herbicides; desiccation/defoliation of plants.