LEONARDI A.; NARDI D.; FRIGERIO A.; TRKA A., FARMACO. ED. SCI., 1978, 33, NO 5, 364-381
作者:LEONARDI A.、 NARDI D.、 FRIGERIO A.、 TRKA A.
DOI:——
日期:——
Highly Regioselective Palladium-Catalyzed Direct Arylation of Oxazole at C-2 or C-5 with Aryl Bromides, Chlorides, and Triflates
作者:Neil A. Strotman、Harry R. Chobanian、Yan Guo、Jiafang He、Jonathan E. Wilson
DOI:10.1021/ol1011778
日期:2010.8.20
Complementary palladium-catalyzed methods for directarylation of oxazole with high regioselectivity (>100:1) at both C-5 and C-2 have been developed for a wide range of aryl and heteroaryl bromides, chlorides, iodides, and triflates. C-5 arylation is preferred in polar solvents with phosphines 5 or 6, whereas C-2 arylation is preferred by nonpolar solvents and phosphine 3. This represents the first