Studies on the reaction of unsymmetrical trifluoromethyl 1,2-phenylenediamine with various ketones leading to novel fluorinated heterocycles
摘要:
Unsymmetrical 1,2-phenylenediamine on reaction with various ketones resulted in a number of fluorinated heterocycles such as benzimidazoles, quinoxalines and spiro benzimidazoles in high yields. The role of substituents in diamine in its reaction with various ketones and on the nature of product formation has been studied in detail. (C) 2003 Elsevier B.V. All rights reserved.
A class of substituted benzimidazoles are useful parasiticides for the systemic control of insects and acarina which feed on living tissues of animals. The compounds, which control both bloodsucking parasites and flesh-eating parasites, are characterized by a 2-fluoroalkyl substituent, a single nitro substituent on the benzene ring, and a single fluoroalkyl or chloro substituent on the benzene ring.
2,6-Di(fluoroalkyl)-4-nitrobenzimidazoles and certain N-acyl derivatives thereof, including sulfonates, thiocarboxamides, and carboxylates, are used to control a broad spectrum of mites and insects with particularly good effect against members of the orders Hemiptera, Coleoptera, Orthoptera, and Lepidoptera.
Benzimidazoline salts, their preparation and compositions containing them
申请人:ELI LILLY AND COMPANY
公开号:EP0031699A1
公开(公告)日:1981-07-08
Benzimidazoline salts of formula (I):
wherein:
Rn(+) represents a cation having a valency of n, n being an integer from 1 to 3;
R1 represents halo or trifluoromethyl;
R2 represents hydrogen or C1-4 alkyl; and
R3 represents hydrogen, or fluoro or C1-3
fluoroalkyl, have been found to be effective ectoparasiticides.