A new method for free radical methylation of pyrimidinones and pyridinones with dicumylperoxide (DCP) under metal-free condition is introduced. A 50 g-scale reaction could be performed safely at desired...
Cu(OAc)<sub>2</sub>-Catalyzed Tandem Blaise/Pinner-Type Reaction for One-Pot Synthesis of Pyrimidin-4-ones
作者:Yu Sung Chun、Ju Hyun Kim、Suh Young Choi、Young Ok Ko、Sang-gi Lee
DOI:10.1021/ol303153g
日期:2012.12.21
A novel tandemBlaise/Pinner-type reaction for the one-potsynthesis of pyrimidin-4-ones is described. The Blaisereactionintermediate, formed by addition of a Reformatsky reagent to a nitrile, reacted with a second nitrile chemoselectively in the presence of a catalytic amount of Cu(OAc)2 to afford pyrimidin-4-ones.
A novel ring transformation of oxazinones and azetidinones into pyrimidinones
作者:Shinichi Kawamura、Yuzuru Sanemitsu
DOI:10.1021/jo00054a026
日期:1993.1
Azetidinones or oxazinones, being easily prepared from enamines and acyl isocyanates, were transformed into highly substituted 4(3H)-pyrimidinones upon treatment with ammonium acetate. This novel ring transformation was also accomplished through a one-pot reaction without isolation of the adduct.