A new substrate for the Biginelli cyclocondensation: direct preparation of 5-unsubstituted 3,4-dihydropyrimidin-2(1H)-ones from a beta-keto carboxylic acid
Bussolari
JC
The R.W. Johnson Pharmaceutical Research Institute, Raritan, New Jersey 08869, USA. jbussola@prius.jnj.com
McDonnell
PA