J. P. Sanchez, T. F. Mich, Gin G. Huang
Mar 1, 1994
Citations
0
Influential Citations
9
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
Starting with 1,1-dimethoxy-2-propanone (1), 6-formyl-1,2-dihydro-2-oxo-3-pyridinecarboxylic acid (5a) has been prepared in large quantities by a highly efficient, 4-step synthesis. This compound, along with its one carbon homologue, 6-acetyl-1,2-dihydro-2-oxo-3-pyridinecarboxylic acid (5b) has been reacted with several carbonyl derivative forming reagents to provide a series of side chains for β-lactams. Among these carbonyl derivatives are styrylamides which were prepared from Wittig and Horner-Emmons reagents. The preparation of the phosphonium salts and phosphonate esters is also described.