The ammonia-free partial reduction of substituted pyridinium salts
作者:Timothy J. Donohoe、Dale J. Johnson、Laura H. Mace、Rhian E. Thomas、Jessica Y. K. Chiu、Jason S. Rodrigues、Richard G. Compton、Craig E. Banks、Peter Tomcik、Mark J. Bamford、Osamu Ichihara
DOI:10.1039/b517462g
日期:——
This paper reports a study into the partial reduction of N-alkylpyridinium salts together with subsequent elaboration of the intermediates thus produced. Activation of a pyridinium salt by placing an ester group at C-2, allows the addition of two electrons to give a synthetically versatile enolate intermediate which can be trapped with a variety of electrophiles. Furthermore, the presence of a 4-methoxy