Anionic cyclizations of aromatic ester dithioacetals with facially biased α,β-unsaturated ketones
作者:Christopher F. Morrison、Craig T.M. Stamp、D. Jean Burnell
DOI:10.1016/j.tetlet.2009.09.162
日期:2009.12
reacted efficiently with anions derived from aromatic ester dithioacetals to provide annulated products in a highly diastereoselective fashion. Whereas the anion of a dimethoxy aromatic ester dithiolane more rapidly reacted by an alternative intramolecular pathway, the anion of the corresponding aromatic ester dithiane was suitable for the intermolecular cyclization.