Om. Singh et al., REACTION OF ALPHA-BIS(METHYLTHIO)METHYLENE CYCLOPROPYL KETONES WITH GUANIDINE - SYNTHESIS OF 2-AMINO-4-ALKOXY-6-(ARYLCYCLOPROPYL)PYRIMIDINES, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 36(12), 1997, pp. 1123-1125
Cyclopropyl ketones 2 which are prepared from the cinnamoylketene dith
ioacetals 1 are transformed to the title pyrimidines 3 and 4 in good y
ields by cyclocondensation of the appropriate ketones 2 with guanidine
nitrate, in the presence of sodium alkoxide/alkanol.