Abstract
The regioselective synthesis of nonsymmetric tetraalkynylarenes has been readily achieved through consecutive sets of Sonagashira cross-coupling reactions of the bis(triflate) derivative of 4,5-diiodobenzene-1,2-diol. The initial coupling reactions proceeded with nearly complete selectivity for the reaction at the Ar-I linkages. Subsequent coupling reactions at the Ar-OTf linkages were efficiently conducted. The tetraalkynylarene products are of interest as components of organic molecular materials.
Original language | English (US) |
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Pages (from-to) | 2831-2836 |
Number of pages | 6 |
Journal | European Journal of Organic Chemistry |
Issue number | 14 |
DOIs | |
State | Published - May 2012 |
Keywords
- Alkynes
- Cross-coupling
- Palladium
- Regioselectivity
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry