An Expeditious Enantioselective Total Synthesis of Valilactone
摘要:
The title compound was synthesized through an expeditious route using Crimmins aldolization to establish the two key stereogenic centers and a hydroxyl group activation (HGA) protocol to construct the anti alpha,beta-disubstituted beta-lactone from the corresponding syn aldol.
On the synthesis of β-keto-1,3-dithianes from conjugated ynones catalyzed by magnesium oxide
摘要:
Mao was used for the first time as a heterogeneous basic catalyst to synthesize beta-keto-1,3-dithianes, potentially useful synthetic intermediates, from conjugated ynones and ynoates. (C) 2008 Elsevier Ltd. All rights reserved.