Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Tibor Timar"'
Publikováno v:
Journal of Heterocyclic Chemistry. 52:1677-1683
4,4-Dimethylchromeno[4,3-d]selenadiazoles 8 with insecticide activities have been synthesized via oxidative ring closure of the corresponding semicarbazone derivatives 7 by treatment with selenium dioxide. Reaction of various alkoxy-2,2-dimethyl-2H-b
Publikováno v:
Journal of Heterocyclic Chemistry. 37:1389-1417
Publikováno v:
Archives of Insect Biochemistry and Physiology. 32:493-501
The precocenes have notable effects on insect development, in particular they can induce specific destruction of corpora allatal cells and thus prevent the synthesis of juvenile hormones. As juvenile hormones have wide-ranging physiological roles in
Publikováno v:
The Journal of Organic Chemistry. 61:5375-5383
Competitive α and β cyclization of 2‘-hydroxychalcone epoxides affords 2-(α-hydroxybenzyl)-3-coumaranone and/or 3-hydroxyflavanones, which depends on the conditions employed. Epoxidation of 2‘-hydroxychalcones by dimethyldioxirane followed by
Publikováno v:
Archives of Insect Biochemistry and Physiology. 30:25-40
The relationship between the structure of nineteen 2,2-dimethylchromene derivatives and their effects on aphid morphogenesis were investigated in a pink clone of the pea aphid, Acyrthosiphon pisum (Harris). Three bioassay systems were used: (1) wing
Publikováno v:
The Journal of Organic Chemistry. 59:6318-6321
Publikováno v:
Synthesis. 1994:837-840
A new and expeditious synthesis of 7-alkylthio-2,2-dimethyl-2H-chrome- nes in good overall yield (59-72%), utilising the Newman-Kwart rearran- gement of 7-(N,N-dimethylthiocarbamoyloxy)-2,2-dimethyl-4-chromanones as the key step, is described
Publikováno v:
Journal of Pesticide Science. 18:277-280
2,2-ジメチル-4H-[1] ベンゾピラノ [4,3-d][1,2,3] セレンジアゾール類 (I) と2,2-ジメチル-3,4-ジクロロクロメン類 (II) のオオモンシロチョウとコロラドハムシに対する殺幼虫活性を調べた. (I) と
Publikováno v:
Journal of Agricultural and Food Chemistry. 41:148-152
5-(Arylmethylene)hydantoins (4-19) and 5-(arylmethylene)-2-thiohydantoins (20-37) have been synthesized by condensation of aromatic aldehydes with hydantoin (1) or 2-thiohydantoin (2) in the presence of ethanolamine. A number of 5-alkyl- and 5-(arylm
Publikováno v:
ChemInform. 22