Enantioselective Prins cyclization: BINOL-derived phosphoric acid and CuCl synergistic catalysis
作者:Claudia Lalli、Pierre van de Weghe
DOI:10.1039/c4cc02826k
日期:——
The first catalytic enantioselective Prins cyclization is disclosed. The reaction is catalyzed by the combination of a chiral BINOL-derived bis-phosphoric acid and CuCl. The process consists of a tandem Prins/Friedel-Crafts cyclization that affords the hexahydro-1H-benzo[f]isochromenes products with three new contiguous stereogenic centers in high yields, and good enantio- and excellent diastereoselectivities
公开了第一催化对映选择性Prins环化。通过手性BINOL衍生的双磷酸和CuCl的组合来催化该反应。该方法包括串联的Prins / Friedel-Crafts环化反应,可提供六氢-1H-苯并[f]异色酮产品,并具有高产率的三个新的连续立体异构中心,以及良好的对映异构性和出色的非对映选择性。