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Phenyltin chlorides

Phenyltin chloride Aldrich Phenyltin trichloride Stannane, trichlorophenyl- (8,9) (1124-19-2)... [Pg.6]

Tin(IV) enolates are generated by the reaction of lithium enolates with trialkyltin chlorides. The best stereoselectivity in the aldol reaction with tin(IV) enolates has been achieved by employing tri-phenyltin chloride. Syn/erythro aldol products were predominantly produced irrespective of the geometry of the starting enolates (Scheme 39). However, the aldol condensation via the enolate derived from norbomanone gave the anti/threo product predominantly (Scheme 40). ... [Pg.117]

AI3-26207 Aquatin Aquatin 20 EC Brestanol Caswell No. 896D CCRIS 6326 Chlorotriphenylstannane EINECS 211-358-4 ERA Pesticide Chemical Code 496500 Fentin chloride GC 8993 General chemicals 8993 HOE 2872 HSDB 6404 LS 4442 NSC 1214 NSC 43675 Phenostat-C Stannane, chlorotriphenyl- Tinmate TPTC Triphenylchlorostannane Triphenylchlorotin Tri-phenyltin chloride. Solid mp = 103.5 = 245, 251, 257, 261, 267... [Pg.140]

Freitag KD and Bock R (1974) Degradation of tri-phenyltin chloride on sugar beet plants and in rats. Pesticide Sci 5 731-738. [Pg.1124]

A mixed standard was prepared by dissolving about 20 mg of each phenyltin chloride and tetraphenyltin in separate 10-ml volumetric flasks. Aliquots of each were combined, in dichloromethane, to yield Ph Sn,Ph Sn , and PhSn at 0.20 yg/yl each. [Pg.326]

If the purity of the synthetic standards is questionable, the following is suggested use the (impure) ng/yl standards to obtain retention time and the detector linear range. Then, during the analysis, add the appropriate phenyltin chloride directly to a test tube and derivatize with lithium aluminium hydride, eliminating the usual extraction and concentration steps. Since the conversion occurs quantitatively, peak heights from these derivatization standards can be used to construct a standard curve. The procedure calls for... [Pg.327]

Fig. 119. Conversion of phenyltin chlorides to their hydride derivatives. Fig. 119. Conversion of phenyltin chlorides to their hydride derivatives.
Hamasaki and coworkers87 investigated the genotoxicity of 14 organic tin compounds (methyl-, butyl- and phenyltins) and inorganic tin (SnCU) on Escherichia coli and on Bacillus subtilis. Dibutyltin dichloride, tributyltin chloride, tributyltin chloride, bis(tributyl-tin)oxide, dimethyltin dichloride and trimethyltin chloride were all found to be genotoxic. [Pg.894]

Radical anions have also been obtained recently from the tin equivalents of the alkynes, the distannynes (see Section 3.14.24.6). Reduction of 2,6-di(2,4,6-triisopropylphenyl)phenyltin(ll) chloride (ArSnCl) with potassium in THF gave [ArSnSnAr] K+, which showed g= 2.0069, (117Sn) = 0.83 mT, (119Sn) = 0.85 mT, and in the crystal, the radical anion adopts a tram-bent structure. The 2,6-di(2,6-diisopropylphenyl)phenyltin analog behaves similarly.533 534... [Pg.865]

In recent years, the first distannynes have been obtained. Reduction of 2,6-di(2,6-diisopropylphenyl)phenyltin(ll) chloride (Ar SnCl) or 2,6-di(2,4,6-triisopropylphenyl)phenyltin(n) chloride (ArSnCl) with sodium or potassium has given not only the stannynes Ar Sn=SnAr and ArSn=SnAr, but also the radical anion [ArSn=SnAr, and the dianions [ ArSn=SnAr] and [Ar Sn=SnAr ]=.534 The properties of the Ar compounds are as shown in Table 11. [Pg.874]

C. Brornotris[2-(perfluorohexyl)ethyl]tin. The fluorous phenyltin product (17.2 g, 13.9 mmol) and dry ether (80 mL) are transferred to a 250-mL, three-necked flask that had been dried in an oven and cooled to 0°C under argon. Bromine (0.71 mL, 14 mmol) is added dropwise over 30 min to the mixture. The addition rate is adjusted to keep the temperature between 0° and 1°C. The mixture is warmed to 25°C and stirred for 7 hr. The reaction mixture is transferred to a 250-mL, round-bottomed flask. The ether and excess bromine are removed under reduced pressure to leave a yellow oil. The oil is dissolved in FC-72 (75 mL) and transferred to a 250-mL separatory funnel. The bromine and bromobenzene by-products are removed by washing three times with methylene chloride (3 x 75 mL) leaving the fluorous layer colorless. The FC-72 is removed under reduced pressure to provide 15.8 g (12.7 mmol, 92%) of a colorless oil (Note 6). [Pg.149]

Electrophilic addition to 9-vinylcarbazole occurs in the Markovnikov sense, thus hydrogen chloride,hydrogen bromide,chlorine, and bromine in carbon tetrachloride, and iodine chloride in pyridine are recorded as adding with initial electrophilic attack at the methylene. Mercuric acetate in methanol gave 9-(2-acetoxymercuri-l-methoxyethyl)carbazole. Although 9-vinylcarbazole gave an iodohydrin, comparable reaction with methanolic sodium hypochlorite led to 9-(2-chlorovinyl)carbazole. Catalytic reduction of the latter produced 9-(2-chloroethyl)carbazole. Tri-phenyltin hydride gave 96. ... [Pg.117]

Dibutyltin dichloride (1) Dilauryltin dichloride (1) Tributyltin chloride (2) Triphenyltin chloride (2) Butyltin trichloride (0.67) Methyltin trichloride (0.67) Phenyltin trichloride (0.67) Tin II (1)... [Pg.159]

Some other triorganotin monochlorides are not associated in the solid state. Tri-phenyltin monochloride (Sn-Cl 2.353 A) [186] was described as discrete unassociated in the solid state and even tricyclohexyltin chloride was first described as monomeric [187], like the triorganotin bromides and iodide investigated so far (see Table 4.1). Tris(m-tolyl)tin chloride (Sn-Cl 2.379 A) and tris(3,5-dimethylphenyl)tin chloride (Sn-Cl 2.357 A) are also discrete monomers [187a]. [Pg.228]

Fortification Standards. For convenience, calculations of recoveries were based on the phenyltin moiety regardless of the accompanying anion (e.g., chloride, acetate, hydroxide, or hydride). [Pg.326]

Certain limitations have been noted. Allyl bromide (48), crotyl chloride (56), and a-methylallyl chloride (56) undergo reduction to the corresponding alkenes, rather than addition to the double bond, upon reaction with tri-phenyltin hydride. Similarly, propargyl bromide (55) is reduced by tri-n-butyltin hydride. The presence of amino groups in the olefin may in some... [Pg.58]

Tri-0-benzyl-l-(9-iodoacetyl-D-ribofuranose (a/p = 1/5) gave the best results as a glycosyl donor in the synthesis of both a and P ribofuranosides the combined use of silver perchlorate and lithium perchlorate afforded ribofuranosides with high a stereoselectivity. On the other hand, P-ribosides were obtained with different catalytic systems, such as the combination of silver perchlorate and di-phenyltin sulfide. The milder tin(II) chloride also gave high yields of P-ribosides, when used in combination with 2 mol% of tetrachlorosilane [97]. [Pg.221]


See other pages where Phenyltin chlorides is mentioned: [Pg.227]    [Pg.118]    [Pg.227]    [Pg.118]    [Pg.350]    [Pg.421]    [Pg.263]    [Pg.374]    [Pg.374]    [Pg.417]    [Pg.423]    [Pg.2]    [Pg.182]    [Pg.2]    [Pg.243]    [Pg.140]    [Pg.1686]    [Pg.116]    [Pg.1686]    [Pg.2]    [Pg.69]    [Pg.703]    [Pg.477]    [Pg.244]    [Pg.119]   


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Phenyltins

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