Synthesis of alkynylbenzo-15-crown-5 ethers
2002
Reactions of 4"-iodobenzo-15-crown-5 ether with ethynylarenes or 4"-ethynylbenzo-15-crown-5 ether with haloarenes in the presence of catalytic amounts of PdIIcomplex salts, CuI, and Et3N gave 4"-(arylethynyl)benzo-15-crown-5 ethers in 55—80% yields.
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