Enantioselective CH Arylation Strategy for Functionalized Dibenzazepinones with Quaternary Stereocenters
作者:Tanguy Saget、Nicolai Cramer
DOI:10.1002/anie.201303816
日期:2013.7.22
Tada! Highly functionalized chiraldibenzazepinones are obtained by a mild palladium(0)‐catalyzed enantioselective CH arylation with excellent selectivities by using simple taddol phosphoramidite ligands. The amide tether allows exclusive regioselectivity through a rare eight‐membered palladacycle intermediate.
first chemical synthesis of a bisindole alkaloid, pseudellone C, was achieved in 44 % overall yield. The highlighting features of the synthesis include the fact that it is protecting-group free, economic and commercially available starting materials are used, and the pure product can be obtained on a gram scale through one single purification process. The key step of this synthesis is the formation