A new and a convenient route to enaminones and pyrazoles
作者:Bogdan Štefane、Slovenko Polanc
DOI:10.1039/b108524g
日期:2002.1.24
A new method has been developed for the regioselective preparation of enaminones and pyrazoles from 1,3-diketonatoboron difluorides. The reactions proceed smoothly under mild reaction conditions, producing enaminones and pyrazoles in high yields.
SYNTHESIS OF 2-ALKYL AND 2-ARYL PYRIMIDINES FROM β-CHLOROVINYL KETONES OF CYCLOPENTANONE TYPE
作者:Sergey A. Popov、Alexey V. Tkachev
DOI:10.1081/scc-100000204
日期:2001.1
Amidines react in the presence of NaHCO3 with β-chlorovinyl ketones, prepared regioselectively by the reaction of 2-acetylcyclo- pentanone-type diketones with PPh3-CCl4 in 73–78% yield, to afford 2-alkyl (aryl)-pyrimidines annelated with cyclopentane derivatives in 79–87% yields.