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Hexa-n-butylditin is used in palladium-catalyzed tin-carbon bond formation. It finds useful application in deoxygenation and desulfurization reactions. It acts as a source of tributylstannyl radicals in synthetic chemistry. It is also used in the radioiodination of styrlpyridines. Further, it is used as a reagent to stannylate aryl halides for further Stille coupling.
Source of on thermolysis or photolysis of tributylstannyl radicals, avoiding the problems sometimes attributable to the hydrogen donor capability of Tri-n-butyltin hydride, A13298 .ɑ-Iodo ketones or esters with a suitably-placed double bond undergo radical cyclizations on UV irradiation in the presence of a catalytic amount of the distannane: Tetrahedron Lett., 28, 2477 (1987); J. Org. Chem., 54, 1826, 3140 (1989). Compare analogous reductive cyclizations using the tin hydride. Improved conditions have been developed for generation of the tributylstannyl radical by mild UV irradiation in the presence of a triplet sensitizer (e.g. 4'-Methoxyacetophenone, A11162 ), allowing selective C-C bond forming reactions to be performed under free-radical conditions: Synlett, 287 (1993).
Brings about the deoxygenation of amine oxides: Synthesis, 55 (1987), and the photo-desulfurization of 1,3-dithiole-2-thiones to tetrathiafulvalenes: J. Am. Chem. Soc., 98, 7440 (1976).
Corcoran, E. B.; Williams, A. B.; Hanson, R. N. A Synthetic Method for Palladium-Catalyzed Stannylation at the 5-and 6-Benzo Positions of Indoles. Org. Lett. 2012, 14 (17), 4630-4633.
Chun, J. H.; Pike, V. W. Regiospecific syntheses of functionalized diaryliodonium tosylates via [hydroxy (tosyloxy) iodo] arenes generated in situ from (diacetoxyiodo) arenes. J. Org. Chem. 2012, 77 (4), 1931-1938.
Dichiarazioni di rischio (UE): H301-H312-H315-H319-H372
Toxic if swallowed. Harmful in contact with skin. Causes skin irritation. Causes serious eye irritation. Causes damage to organs through prolonged or repeated exposure.
Dichiarazioni precauzionali: P260-P280-P301+P310a-P305+P351+P338-P405-P501a
Do not breathe dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.