A comparison of the reactions of [(phenylthio)(trimethylsilyl)methyl]lithium with .alpha.,.beta.-unsaturated ketones and those of other acyl anion equivalents containing sulfur
作者:David J. Ager、Michael B. East
DOI:10.1021/jo00371a014
日期:1986.10
AGER D. J.; EAST M. B., J. ORG. CHEM., 51,(1986) N 21, 3983-3992
Three-Component Coupling Sequence for the Regiospecific Synthesis of Substituted Pyridines
作者:Ming Z. Chen、Glenn C. Micalizio
DOI:10.1021/ja2105703
日期:2012.1.18
A de novo synthesis of substituted pyridines is described that proceeds through nucleophilic addition of a dithiane anion to an α,β-unsaturated carbonyl followed by metallacycle-mediated union of the resulting allylicalcohol with preformed trimethylsilane-imines (generated in situ by the low-temperature reaction of lithium hexamethyldisilazide with an aldehyde) and Ag(I)- or Hg(II)-mediated ring closure