Reversible 1,4-Insertion of Pyridine Into a Highly Polar Metal-Carbon Bond: Effect of the Second Metal
作者:Crispin Lichtenberg、Thomas P. Spaniol、Lionel Perrin、Laurent Maron、Jun Okuda
DOI:10.1002/chem.201200808
日期:2012.5.21
Highly polar allylpotassium reacts with pyridine in a reversible 1,4‐insertion to give an unstable N‐metalated dihydropyridine (DHP). The N‐metalated DHP can be stabilized by conversion into the corresponding potassium zincate or magnesate maintaining the reversible character of the insertion reaction (see scheme).