摘要:
The present invention relates to an industrially advantageous process for producing 2-amino-4,6-dichloropyrimidine, which comprises reacting 2-amino-4,6-dihydroxypyrimidine or its salt with phosphorus oxychloride at a temperature of from 50.degree. to 100.degree. C. in the presence of a solvent and an acid removing agent. Further, the yield of 2-amino-4,6-dichloropyrimidine can be improved by hydrolyzing 4,6-dichloro-2-pyrimidinylphosphoramidic dichloride produced as a by-product of the chlorination reaction to form 2-amino-4,6-dichloropyrimidine. The 2-amino-4,6-dichloropyrimidine produced by the process of the present invention is useful as an intermediate for medicines and agricultural chemicals.
摘要:
N-[(4,6-Dimethoxypyrimidin-2-yl)aminocarbonyl]-3-trifluoromethylpyridine-2-sulfonamide or a salt thereof is disclosed. The compound of the invention is useful as a herbicide which has an extremely high herbicidal effect against a wide variety of weeds including strongly noxious weeds but which shows a high safety against tomato and turfs. A process for the production of N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-3-trifluoromethylpyridine-2-sulfonamide is also disclosed.
摘要:
N-benzoyl N'-pyridyloxy phenyl ureas having the formula ##STR1## wherein X represents a halogen atom; R represents a C.sub.1 -C.sub.4 alkyl group and n is 0, 1 or 2 are useful as insecticides.
摘要:
It is an object of the present invention to easily and inexpensively provide a structure of effectively utilizing a light incident on an invalid area of a solar cell. Moreover, it is another object to improve output characteristics of the solar cell by effectively utilizing the light. The gist of the present invention resides in a solar battery module in which plate-like solar cells are held between a light penetrable sheet member on a light receiving surface side and a sheet member on a back surface side, and internal apertures are filled with a sealing resin, wherein a light diffusion section for diffusely reflecting a light or a light diffusion section of a white color is arranged in an invalid region of each solar cell.
摘要:
Novel fused tricyclic compounds represented by formula (I) are described. Q, Y, —L—X—, A, A′, B, E, D, n and m are as defined in the disclosure. Also described are the processes for the manufacture of these compounds and agriculturally suitable compositions containing these as active ingredients which are useful as herbicides for general or selective pre-emergent or post-emergent control of undesired plant species.
摘要:
A battery charger is provided with a battery charger unit which connects to, and charges a battery. Solar cells are used as the source of power for charging the battery, and connecting parts electrically connect the solar cells and the battery charger unit. The battery charger unit is provided with a solar cell compartment for stowing the solar cells when not in use charging a battery.
摘要:
A substituted pyridinesulfonamide compound having the formula (I): ##STR1## wherein R.sub.1 is an alkyl group, a haloalkyl group, an alkoxyalkyl group or an alkenyl group, R.sub.2 is a hydrogen atom, an alkyl group, a haloalkyl group, an alkoxyalkyl group or an alkenyl group, R.sub.3 is a hydrogen atom, a halogen atom, an alkyl group, a haloalkyl group, an alkoxy group, an alkylthio group, an alkoxyalkyl group, an alkylamino group or a dialkylamino group, and each of X and Y which are independent from each other, is a halogen atom, an alkyl group, an alkoxy group or a haloalkoxy group, or salt thereof, a preparation thereof, a herbicidal composition containing it and intermediate thereof.
摘要:
A chloronicotinic acid compound is prepared by hydrolyzing a 3-trichloromethyl pyridine compound in the presence of sulfuric acid or phosphoric acid. By this process, a highly pure chloronicotinic acid compound is obtainable in good yield. This compound is useful as an intermediate for medicines.
摘要:
A phenoxypyridine compound represented by the formula: ##STR1## wherein X represents a hydrogen atom, an alkyl group, an alkoxy group, an amino group, a cyano group, a hydroxy group, a halogen atom, or a 2-chloro-4-trifluoromethylphenoxy group, which compound is useful as a herbicide or an intermediate for agricultural chemicals, is disclosed.
摘要:
Compounds having the formula ##STR1## wherein X represents a halogen atom, nitro, methyl, or trifluoromethyl group; Y represents a halogen or hydrogen atom or methyl group; and Z represents a halogen atom are useful as agricultural chemicals and pharmaceuticals.