Palladium-Catalyzed 2-Pyridylmethyl Transfer from 2-(2-Pyridyl)ethanol Derivatives to Organic Halides by Chelation-Assisted Cleavage of Unstrained Csp3Csp3 Bonds
作者:Takashi Niwa、Hideki Yorimitsu、Koichiro Oshima
DOI:10.1002/anie.200604472
日期:2007.4.2
Transition metal-free tandem pyridinyl–allyl–allyl cross-coupling reaction
ABSTRACT A transition metal-free, direct one-potdominoallylation reaction of 2-pyridinyl Grignard reagents with polysubstituted allyl chlorides for the regioselective synthesis of pyridinyl-substituted 1,5-diene derivatives has been disclosed. The reaction presumably proceeded through the coupling of polysubstituted allyl chloride to 2-PyMgX, which was in situ generated from 2-bromopyridine with