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method for preparation of insecticide preparations of unsaturated pyrazolidinederivaten preparations obtained, thus formed.and method for preparation of unsaturated pyrazolidinederivaten with insecticide effect.
method for preparation of insecticide preparations of unsaturated pyrazolidinederivaten preparations obtained, thus formed.and method for preparation of unsaturated pyrazolidinederivaten with insecticide effect.
1398196 1-Carbamoyl-#SP2/SP-pyrazoline derivatives PHILIPS GLOEILAMPENFABRIEKEN NV 6 Feb 1973 [9 Feb 1972] 5832/73 Heading C2C Novel compounds have the Formula I wherein A is a phenyl group optionally carrying 1 or 2 substituents selected from halogen, -CN, C 1-4 alkyl, C 1-4 haloalkyl, cycloalkyl, C 1-4 alkoxy, C 1-4 alkylthio, -NHR, -NRR (each R is individually C 1-4 alkyl) and heterocyclic radicals attached to the phenyl group by a N ring atom and optionally containing a second hetero atom selected from S, O and N, or A is a thienyl or pyridyl group optionally substituted by a halogen atom or a C 1-4 alkyl group; B is a hydrogen atom or a phenyl group optionally carrying 1 to 3 substituents selected from halogen, C 1-4 alkoxy, C 1-4 alkyl, C 1-4 haloalkyl, cycloalkyl, C 1-4 alkylthio, C 1-4 alkylsulphonyl, C 1-4 dioxyalkylene, -NHR, -NRR (each R is individually C 1-4 alkyl) and heterocyclic radicals attached to the phenyl group by a N ring atom and optionally containing a second hetero atom, or B is a furyl, pyrryl, thienyl or pyridyl group optionally substituted by a halogen atom or a C 1-4 alkyl group; R 1 is halogen, C 1-4 alkoxy, C 1-4 alkyl, C 1-4 haloalkyl, cycloalkyl, C 1-4 alkylthio, C 1-4 alkylsulphonyl, -CN, -NO 2 or an amino group substituted by 1 or 2 alkyl groups which together with the common nitrogen atom can form a ring optionally containing a second hetero atom; and n is 0, 1 or 2, with the proviso that when A represents a phenyl group containing 2 substituents these do not occupy the 2,6 positions on the benzene ring and also that (R 1 ) n is not a 2,6- disubstitution. The #SP2/SP-pyrazolines of Formula I are prepared by reacting a compound of Formula II with a compound of Formula III preferably in the presence of a solvent (e.g. an ether) and a catalyst (e.g. an organic base). Specific examples relate to the preparation of (a) 1 - (3,4 - dichlorophenylcarbamoyl) - 3- phenyl - #SP2/SP - pyrazoline and (2) 1 - (4 - chlorophenylcarbamoyl) - 3 - (4 - chlorophenyl) - 5- (4 - chlorophenyl) - #SP2/SP - pyrazoline but many more pyrazolines are listed with their physical properties. The compounds of Formula I possess biocidal activity.
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