Intramolecular hypervalent tin-oxygen interaction. The origin for fixation of six-membered carbocycles to the 1,3-diaxial conformer and for stereoselective osmylations
1,4-Fragmentation of γ-tributylstannylalcohols using iodosylbenzene, boron trifiluoride–diethyl ether, and dicyclohexycarbodiimide produces unsaturatd carbonylcompounds; the fragmentation, combined with conjugate addition of tributylstannyl-lithium and reduction or alkylation, offers an efficient procedure for the reductive and alkylative ring opening of cyclic vinyl ketones.
Silylstannations of α,β-unsaturated carbonyl compounds via the generation of Bu3Sn– in ionic liquids
作者:Steven Dickson、Darrell Dean、Robert. D. Singer
DOI:10.1039/b508400h
日期:——
The tributylstannyl anion, Bu3Sn-, can be generated in imidazolium based ionic liquids from Me3SiSnBu3 and reacted with alpha,beta-unsaturatedcarbonylcompounds to afford 3-tributylstannylated products in good yields.
Stannyl-Lithium: A Facile and Efficient Synthesis Facilitating Further Applications
作者:Dong-Yu Wang、Chao Wang、Masanobu Uchiyama
DOI:10.1021/jacs.5b06587
日期:2015.8.26
We have developed a highly efficient, practical, polycyclic aromatic hydrocarbon (PAH-catalyzed synthesis of stannyl lithium (Sn-Li), in which the tin resource (stannyl chloride or distannyl) is rapidly and quantitatively transformed into Sn-Li reagent at room temperature without formation of any (toxic) byproducts. The resulting Sn-Li reagent can be stored at ambient temperature for months and shows high reactivity toward various substrates, with quantitative atom efficiency.
Bakale, Roger P.; Scialdone, Mark A.; Johnson, Carl R., Journal of the American Chemical Society, 1990, vol. 112, # 18, p. 6729 - 6731
作者:Bakale, Roger P.、Scialdone, Mark A.、Johnson, Carl R.