Tolerance of Aedes aegypti larvae to triorganotins

Nguyen, Thanh Truc; Ogwuru, Nwaka; Eng, George

doi:10.1002/1099-0739(200007)14:7<345::aid-aoc6>3.0.co;2-7

Cited by 19 publications

(14 citation statements)

References 16 publications

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“…Peak in the region δ 9.5-10.3 ppm for the OH group has been found absent in all the salicylate compound shows the deprotonation of phenolic group and bonding takes place through phenolic oxygen 29 . A multiplet centred at δ 4.0-4.8 ppm has been assigned to the methine proton of isopropoxy group 32 and a triplet at δ 3.1-3.9 ppm has been assigned to α-protons of n-propoxy group 20 in all the salicylate derivatives ( Figure 3).…”

Section: H Nmr Spectrasupporting

confidence: 93%

Synthesis of Derivatives of Organoheterotrimetallic dibutyl-[Al(III), Sn(IV), Ti(IV)]- μ -oxoisopropoxide- μ-oxo n-Propoxide with Salicylates

2015

Chem Sci Trans

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Abstract:Tin diacetate and aluminium isopropoxide in equimolar proportion in xylene affords the complex [(OAc)SnOAl(OPr i ) 2 ] which on reaction with Ti(OPr n ) 4 in 1:1 molar ratio yielded a new organoheterotrimetallic-μ-oxoisopropoxide-μ-oxo-n-propoxide [SnO 2 TiAl(OPr i ) 2 (OPr n ) 3 ] with continuous liberation of isopropyl acetate and propyl acetate formed during the course of reaction. The preparation of some important salicylates (methyl salicylate, chloro methyl salicylate, phenyl salicylate, phenyl 2-hydroxy 5-chloro benzoate) derivatives of compound [Bu 2 SnO 2 TiAl (OPr i ) 2 (OPr n ) 3 ] have been carried out in different molar ratios(1:1 and 1:2) in refluxing benzene. The complexes were further characterized by spectral analysis (IR, 1 H, 13 C, 119 Sn, 27 Al NMR and mass spectra).The spectral studies confirmed the proposed framework of the new organoheterotrimettalic complexes and indicated a tetrahedral geometry around the central metal atom.

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Section: H Nmr Spectrasupporting

confidence: 93%

Synthesis of Derivatives of Organoheterotrimetallic dibutyl-[Al(III), Sn(IV), Ti(IV)]- μ -oxoisopropoxide- μ-oxo n-Propoxide with Salicylates

2015

Chem Sci Trans

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“…This data relates both to triphenyltin acetate and triphenyltin hydroxide. We have pooled the data for these two compounds because the acetate is rapidly hydrolyzed to hydroxide (Eng et al 1996;Nguyen et al 2000), so we assume that triphenyltin acetate exposure can also be classified as triphenyltin hydroxide exposure.…”

Section: Comparison With Literature Datamentioning

confidence: 93%

Impact of triphenyltin acetate in microcosms simulating floodplain lakes. II. Comparison of species sensitivity distributions between laboratory and semi-field

et al. 2006

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The study objectives were to shed light on the types of freshwater organism that are sensitive to triphenyltin acetate (TPT) and to compare the laboratory and microcosm sensitivities of the invertebrate community. The responses of a wide array of freshwater taxa (including invertebrates, phytoplankton and macrophytes) from acute laboratory Single Species Tests (SST) were compared with the concentration-response relationships of aquatic populations in two types of freshwater microcosms. Representatives of several taxonomic groups of invertebrates, and several phytoplankton and vascular plant species proved to be sensitive to TPT, illustrating its diverse modes of toxic action. Statistically calculated ecological risk thresholds (HC 5 values) based on 96 h laboratory EC 50 values for invertebrates were 1.3 lg/l, while these values on the basis of microcosm-Species Sensitivity Distributions (SSD) for invertebrates in sampling weeks 2-8 after TPT treatment ranged from 0.2 to 0.6 lg/l based on nominal peak concentrations. Responses observed in the microcosms did not differ between system types and sampling dates, indicating that ecological threshold levels are not affected by different community structures including taxa sensitive to TPT. The laboratory-derived invertebrate SSD curve was less sensitive than the curves from the microcosms. Possible explanations for the more sensitive field response are delayed effects and/or additional chronic exposure via the food chain in the microcosms.

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“…stephensi) and Aedes aegypti (Ae. aegypti) mosquitoes, several classes of organotins have been synthesized and screened against their larvae and the adult mosquitoes [6][7][8][9][10][11][12]. The classes of organotin compounds screened included dithiocarbamates [8], tris-(para-substituted phenyl)tins [9] and carboxylates [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Larvicidal and structural studies of some triphenyl- and tricyclohexyltin para-substituted benzoates

Duong

Song

Mitrojorgji

et al. 2006

Journal of Organometallic Chemistry

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Tolerance of Aedes aegypti larvae to triorganotins

Cited by 19 publications

References 16 publications

Synthesis of Derivatives of Organoheterotrimetallic dibutyl-[Al(III), Sn(IV), Ti(IV)]- μ -oxoisopropoxide- μ-oxo n-Propoxide with Salicylates

Synthesis of Derivatives of Organoheterotrimetallic dibutyl-[Al(III), Sn(IV), Ti(IV)]- μ -oxoisopropoxide- μ-oxo n-Propoxide with Salicylates

Impact of triphenyltin acetate in microcosms simulating floodplain lakes. II. Comparison of species sensitivity distributions between laboratory and semi-field

Larvicidal and structural studies of some triphenyl- and tricyclohexyltin para-substituted benzoates

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