A new and efficient route for the synthesis of alkynyl functionalized silicon derivatives

作者：Kownacki Ireneusz^*; Orwat Bartosz; Marciniec Bogdan; Kownacka Agnieszka

来源：Tetrahedron Letters, 2014, 55(2): 548-550.

DOI：10.1016/j.tetlet.2013.11.103

• Alkynes
• Alkynyl silanes
• lodosilanes
• Silylative coupling
• Iridium complexes

The iridium-based catalytic system, [{Ir(mu-Cl)(CO)(2)}(2)]/NEt(i-Pr)(2), was examined in the coupling reaction of iodotrisubstituted silanes (R3SiI) with various terminal arylalkynes ((RC)-C-1 CH). Under optimum conditions, the process occurs very efficiently (in particular for Me3SiI and Me2PhSiI), giving exclusively the respective C-sp-silyl functionalized alkynes ((RC)-C-1 CSiR3). Additionally, this iridium-based catalytic system was successfully used for the preparation of selected bis(phenylethynyl) disubstituted silanes [(R2Si)-Si-2(C CPh)(2)] via coupling of phenylacetylene with appropriate diiodo-disubstituted silanes ((R2SiI2)-Si-2).

• 出版日期2014-1-8