Formal (4+1) Cyclization of Ammonium Ylides with Vinylogous para-Quinone Methides
作者:Mario Waser、Lukas Roiser、Katharina Zielke
DOI:10.1055/s-0037-1610268
日期:2018.10
The formal (4+1) cyclization between in situ generated achiral carbonyl-stabilized ammonium ylides and vinylogous p-quinone methides can be carried out under operationally simple conditions, leading to two different double bond regioisomers depending on the conditions used. Apart from these racemic approaches, a first proof-of-concept for enantioselective versions of these reactions was also obtained