Highly regioselective, base-catalyzed, biginelli-type reaction of aldehyde, phenylacetone and urea/thiourea kinetic vs. thermodynamic control
作者:Manijeh Nematpour、Elham Rezaee、Mehdi Jahani、Sayyed Abbas Tabatabai
DOI:10.1080/17415993.2017.1402332
日期:2018.3.4
An efficient one-potregioselectivesynthesis of various novel 3,4-dihydropyrimidin-2(1H)-one (DHPMs) via a three-component Biginelli-type condensation of aldehyde, phenylacetone and urea/thiourea under two different based-catalyzed conditions is described. In kinetic control path, lithium N, N-diisopropylamide (LDA-20 mol % generated in situ from n-BuLi and diisopropylamine) was used as the base,
Synthesis and Suzuki–Miyaura reactions of 5-halo-3,4-dihydropyrimidin-2(1H)-ones
作者:Andrew J. Zych、Hong-Jun Wang、Samuel A. Sakwa
DOI:10.1016/j.tetlet.2010.07.093
日期:2010.9
6-methyl-4-phenyl-5-halo-3,4-dihydropyrimidin-2(1H)-ones via the Suzuki–Miyaura reaction is reported. These previously unknown heterocyclic halides are easily prepared using the Biginelli multicomponent reaction followed by halodecarboxylation. The effect of varied substitution at the C-4 position on the cross-coupling reaction is also examined.