Aldol reactions of 2-thioxotetrahydropyrimidin-4(1H)-ones: stereoregulations from endo- and exocyclic chiral centres
作者:Varun Kumar、Kapil Kumar、Anang Pal、Gopal Lal Khatik、Vipin A. Nair
DOI:10.1016/j.tet.2012.12.020
日期:2013.2
reactions of conformationally restricted 3-aryl-1-((S)-1-phenylethyl)-2-thioxotetrahydropyrimidin-4(1H)-ones governed the formation of anti aldol adducts, by a kinetic reaction pathway. The preferential formation of the anti aldol diastereomers was also assisted by the steric effects of the electrophile through diastereofacial selection while the electroniceffects of the arylgroup at N3 remained subtle.