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2004
Alkynes
Q 0087
47- 068
One-Pot Synthesis of Monosubstituted Aryl(hetaryl)acetylenes by Direct Introduction of the C≡CH Residue into Arenes and Hetarenes. — A convenient one-pot
synthesis of aryl(hetaryl)acetylenes by cross coupling of aryl(hetaryl)iodides with acetylene in the presence of PdCl2(PPh3)2, CuI and K2CO3 in DMF is presented. The target
compounds are prepared in good to moderate yields (60-75%) for activated iodides
such as (Ib) and in low yields (10-35%) from iodo derivatives with low reactivity such
as (Ie). — (VASILEVSKY*, S. F.; KLYATSKAYA, S. V.; ELGUERO, J.;
Tetrahedron 60 (2004) 31, 6685-6688; Inst. Chem. Kinet. Combust., Sib. Branch Russ.
Acad. Sci., Novosibirsk 630090, Russia; Eng.) — Bartels
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