A straightforward route to polyenylsilanes by palladium- or nickel-catalyzed cross-coupling reactions
作者:Francesco Babudri、Gianluca M. Farinola、Vito Fiandanese、Luigia Mazzone、Francesco Naso
DOI:10.1016/s0040-4020(97)10209-5
日期:1998.2
ipso-borodesilylation with BCl3 followed by Pd-catalyzed coupling reactions of the resulting boron derivative with aryl halides, whereas the synthesis of alkyl substituted polyenes requires the conversion of the boron intermediate into iodo-derivative and the subsequent coupling with alkyl Grignard reagents in the presence of a Ni(II) catalyst.
A Novel Regio- and Stereoselective Formal Cross-Coupling Reaction of Unsaturated Silanes with Arenediazonium Tetrafluoroborates
作者:Francesco Babudri、Gianluca M. Farinola、Francesco Naso、Daniela Panessa
DOI:10.1021/jo9912451
日期:2000.3.1
A Synthesis of (1<i>E</i>,3<i>E</i>)-TMS Dienes from Keto-Xanthates via Chugaev-Type Elimination
作者:Kelvin Kau Kiat Goh、Sunggak Kim、Samir Z. Zard
DOI:10.1021/jo402169v
日期:2013.12.6
An efficient route leading to exclusively (1E,3E)-TMS dienes is described. Radical xanthate addition of keto-xanthates to vinyltrimethylsilane followed by one-pot Chugaev elimination/cyclization and in situ oxidation with m-CPBA afforded the corresponding TMS 2-sulfolenes. Isomerization to 3-sulfolenes by the action of DBU with the extrusion of sulfur dioxide in refluxing toluene gave the titled (1E,3E)-TMS dienes.