Tributyltin acetate

A similar approach with [l- C]tributyltin acetate showed that carbon hydroxylation occurred at the a-, as well as at the /8-, carbon atoms, followed by Sn-C bond-cleavage, to afford dibutyltin derivatives. 

Tributyltin acetate, (C4H9)3SnOOCCH3, and bis(tributyltin) oxide, (C4H9)3Sn-0-Sn(C4H9>3, have been commercialized as antimicrobial agents in the paper, wood preservation, plastics and textile industries29. 

Mouse 46-230 mg/kg BW LD50, single oral dose. LD50 values were lowest for tributyltin acetate (46 mg/kg BW) followed by benzoate (108), chloride (117), laurate (180), and oleate (230) 9... 

Cycloaddition to aldehydes. In the presence of a Pd(0) catalyst, 1 adds to electron-poor alkenes to give methylenecyclopentanes. It also adds to aldehydes to form methylenetetrahydrofurans when tributyltin acetate is used as a cocatalyst.1... 

In solution, the 170 NMR spectra of tributyltin acetate and dibutyltin diacetate show a single signal in a variety of solvents over the range 200-300 K. This is interpreted to imply the existence, in solution, of a cyclic monomer in which the carboxylate groups ate anisobidentate, and are undergoing rapid intramolecular exchange 34.350... 

These observations do not, however, mean that TBT carboxylates and TBTCl are ionic in nature. After detailed analysis of the physical evidence such as the low specific conductance and dipole moment of trialkyltin halides, Neumann has concluded that they have no "salt-like constitution" (6). Bonding in the trialkyltin carboxylates also is essentially similar to that in covalent alkyl esters, as evidenced by the low dipole moment of 2.2D for tributyltin acetate in benzene, as compared to 1.9D for alkyl acetates (7). 

NMR of Tributyltin Acetate-Acetic Acid Mixture. Corroborating the above indication is our observation that a mixture of TBT acetate and acetic acid in carbon tetrachloride shows only one resonance for... 

The first instance of SFC coupled to ICP-MS was reported by Shen et al. [127] for the speciation of tetraalkyltin compounds. Liquid C02 was used as the mobile phase and the SFC column was completely inserted through the transfer line and connected to a frit restrictor (Fig. 11). The restrictor was heated to approximately 200°C by a copper tube inserted into the ICP torch. Tetramethyltin (TMT), tetrabutyltin (TBT), tetraphenyltin (TPT), tributyltin acetate... 

Because manufacturers are unwilling to generate data to substantiate the acceptability of continued use, the other tin compounds of the case have become obsolete, including bis (tributyltin) adxpate[7437-35-6]y bis(tributyltin) sulfosalicylate/44/5M 2-/]y tributyltin acetate [56-36-0], tributyltin acrylate[13331-52-7], tributyltin chloride[1461 -22-9]y tributyltin linoleate/24124-25-2], tributyltin monopropylene glycol maleate[53466-85-6]y and tributyltin neodecanoate[28801 -69-6]. Because of the substantial number of tin compounds, this is not a typical example, but it does illustrate the point that there has been a large decline in the availability of niche products. 

Single gavage doses of tributyltin compounds at extremely high doses (4,000 mg/kg tributyltin acetate, benzoate, chloride, or oleate) to mice resulted in hypoactivity, impaired respiration, and convulsions (Pelikan and Cerny 1970). 

Hostettler and Cox [141] reported relative reaction rates of phenyl isocyanate with ra-butanol, water, and diphenyl urea by various catalysts. Taking the rate of phenyl isocyanate with -butanol as 1, relative rates catalyzed by N-methylmorpholine (II), triethylamine, tetramethyl-1,3—butanediamine, triethylenediamine, tributyltin acetate, and dibutyltin diacetate are 40, 86, 260, 1200, 80,000, and 600,000, respectively. The relative rate with water when uncatalyzed is 1.1, while the relative rates catalyzed by N-methylmorpholine (II),... 

Efficient cycloadditions to aldehydes can be achieved by employing a cocatalyst in conjunction with the standard catalyst system30. Suitable cocatalysts are tributyltin acetate (20-40 mol%) or trimethyltin acetate (5-10 mol%) and the catalyst system itself is that derived from palladium acetate (5mol%) and triphenylphosphane (25 mol%) in tetrahydrofuran. 

Tetrahydro-4-methylene-2-[( )-2-phenylethcnyl]furan (39) (tributyltin acetate as cocatalyst) l> ... 

Procedure as above except tributyltin acetate substituted by 5 mg (22 pmol) of trimethyltin acetate and following addition of substrates, heating at 70 C continued for 1 h. The product is isolated following flash chromatography yield 88 mg (95%). 

Acetoxytoluene. See p-Cresyl acetate a-Acetoxytoluene. See Benzyl acetate m-Acetoxytoluene. See m-Cresyl acetate o-Acetox oluene. See o-Cresyl acetate p-Acetoxytoluene. See p-Cresyl acetate Acetoxytributylstannane. See Tributyltin acetate... 

Stan-Mag MLW. See Magnesium oxide Stannane, acetoxytributyl-. See Tributyltin acetate... 

TBTA. See Tributyltin acetate TBTF. See Tributyltin fluoride TBTO. See Tributyltin oxide TBUP. See Tributyl phosphine 6TB24X. See 6-t-Butyl-2,4-xylenol p-TBX. See Tetrabromo-p-xylene TBZ. See Thiabendazole TCA. See Trichloroacetic acid 1,2,3-TCB. See 1,2,3-Trichlorobenzene 1,2,4,5-TCB. See 1,2,4,5-Tetrachlorobenzene TCBO. See Trichlorobutylene oxide TCC TCC. See 3,4,4 -Trichlorocarbanilide TCCA. See Trichloroisocyanuric acid TCD Ketone A. See Tricycio [5.2.1.0 ] decane-8-one... 

Tin, tributyl-, acetate. See Tributyltin acetate Tin, triethyl-, bromide. See Triethyltin bromide Tin triphenyl acetate. See Fentin acetate Tinuvin 123. See Bis-(1-octyloxy-... 

Tri-n-butylacetoxytin. See Tributyltin acetate Tributyl acetyl citrate Tri-n-butyl O-acetylcitrate Tributyl 0-acetylcitrate Tributyl 2-(acetyloxy)-1,2,3-propanetricarboxylate. See Acetyl tri butyl citrate... 

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