- N-Heterocyclic carbene catalyzed oxidative stannylation of aldehydes: A facile entry to organotin(IV) carboxylates
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A simple protocol is described for the oxidative transformation of aldehydes to the corresponding organotin(IV) carboxylates in high yields (up to 90%) that utilizes atmospheric O2 as the sole oxidant, N-heterocyclic carbene as catalyst (at 10 mol %), and tributyl tin chloride as stannylating agent. The uniqueness of the reaction lies in the direct conversion of aldehydes to the corresponding organotin(IV) carboxylates via stannylation of carboxylic acids, generated from the reaction of a Breslow intermediate with O2.
- Reddi, Rambabu N.,Malekar, Pushpa V.,Sudalai, Arumugam
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p. 2679 - 2681
(2013/06/05)
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- Synthesis, characterization and in vitro antitumour activity of triphenyl- and tri-n-butyltin benzoates, phenylacetates and cinnamates
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Spectroscopic, structural and antitumour properties of triphenyltin and tri-n-butyltin benzoates, phenylacetates and cinnamates are compared with those of their corresponding pentafluorophenyl analogues.
- Willem, Rudolph,Bouhdid, Abdeslam,Mahieu, Bernard,Ghys, Laurent,Biesemans, Monique,Tiekink, Edward R.T.,De Vos, Dick,Gielen, Marcel
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p. 151 - 158
(2007/10/03)
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- Triorganotin(IV) Benzoates and Aminobenzoates
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Complexes of the general formula R3SnX, where X is the anion of benzoic acid, o-, m-, p-amino- or N-phenyl-o-amino-benzoic acid, have been prepared and characterised.A combination of molecular weight, infrared, 1H NMR and 119Sn Moessbauer measurements show that, the amino-nitrogen atoms are not coordinated to tin.When R= phenyl or cyclohexyl, the compounds are monomeric and four-coordinate, and when R is alkyl (Me, n-Pr, n-Bu) they are monomeric and five-coordinate, with a bidentate carboxylate in the equatorial position of a trigonal bipyramidal structure.
- Sandhu, G. K.,Verma, S. P.,Moore, L. S.,Parish, R. V.
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- FREE RADICAL CHAIN REACTION OF ALLYLIC TIN COMPOUNDS WITH ORGANIC HALIDES INVOLVING SH prime PROCESS.
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Negatively substituted halomethanes were allylated easily by allyltin compounds via radical chain reaction involving S//H prime process. Aryl, aralkyl, and alkyl halides underwent similar chain reactions only when the tin compound was charged in excessive amounts.
- Migita,Nagai,Kosugi
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p. 2480 - 2484
(2007/10/02)
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