Synthesis of polydentate chalcogen-containing ligands using the system hydrazine hydrate–base
摘要:
The reaction of dichlorodiethyl ether or dichlorodiethylamine hydrochloride with potassium or ethanolammonium dichalcogenides prepared in situ from elemental sulfur or selenium in the system hydrazine hydrate-alkali results in oligomeric dichalcogenides, whose further splitting at the chalcogen-chalcogen bond in the same system and subsequent alkylation affords bis(organylsulfanyl)- or bis(organylselanyl)-substituted derivatives of diethyl ether or diethylamine. Ligands with aryl substituents at the chalcogens have been prepared in 48-59% yield by splitting of diaryldichalcogenides in the system hydrazine hydrate-alkali and subsequent reaction with dichlorodiethyl ether or dichlorodiethylamine. A ditopic tetradentate ligand has been synthesized by the use of dichlorodiethylformal.
The invention relates to compounds of the general formula (I),
in which the radicals A
1
, A
2
, A
3
, A
4
, Lm, Q, R
1
, T and U have the meaning given in the description and to the use of the compounds for controlling animal pests. In addition, the invention relates to processes and intermediates for the preparation of the compounds according to formula (I).
The invention relates inter alia to halogen-substituted compounds of the general formula (I)
in which the radicals A
1
-A
4
, T, n, W, Q, R
1
and Z
1
-Z
3
have the meanings given in the description. Also described are processes for preparing the compounds of the formula (I). The compounds according to the invention are particularly suitable for controlling insects, arachnids and nematodes in agriculture and ectoparasites in veterinary medicine.
HALOGEN-SUBSTITUTED PYRAZOL DERIVATIVES AS PEST-CONTROL AGENTS
申请人:BAYER CROPSCIENCE AG
公开号:US20150353500A1
公开(公告)日:2015-12-10
The invention relates inter alia to halogen-substituted compounds of the general formula (I)
in which the radicals A
1
-A
4
, T, n, W, Q, R
1
and Z
1
-Z
3
have the meanings given in the description. Also described are processes for preparing the compounds of the formula (I) and possible intermediates for the preparation of these compounds. The compounds according to the invention are particularly suitable for controlling insects, arachnids and nematodes in agriculture and ectoparasites in veterinary medicine.
The invention comprises, inter alia, pyrazolylheteroarylamides of the general formula (I)
in which the A
1
-A
4
, T, W, Q, R
1
and Z
1
-Z
3
radicals are each as defined in the description. Also described are processes for preparing the compounds of the formula (I). The inventive compounds are especially suitable for controlling insects, arachnids and nematodes in agriculture and ectoparasites in veterinary medicine.
POLY(ORGANOPHOSPHAZENE) COMPOSITION FOR BIOMATERIALS
申请人:SONG Soo-Chang
公开号:US20130004455A1
公开(公告)日:2013-01-03
Provided are a use of chemically-crosslinkable, poly(organophosphazene)s for biomaterials, chemically-crosslinkable poly(organophosphazene)s with a physiologically active substance covalently-bonded thereto, a use thereof for biomaterials, and a process for preparing the same. The chemical crosslinkings can be made by UV irradiation, and/or a crosslinker, and/or an additive, and/or an enzyme, and/or a mixing of at least one polymer.