作者:Siu Min Tan、Anthony C. Willis、Michael N. Paddon‐Row、Michael S. Sherburn
DOI:10.1002/anie.201510925
日期:2016.2.24
combining the powerful twofold diene‐transmissive Diels–Alder chemistry of [3]dendralenes with the simplicity of enamine formation. On mixing at ambient temperature, a simple dienal condenses with a primary or secondary amine to generate the enamine, a 1‐amino‐[3]dendralene in situ, and this participates as a double diene in a sequence of two Diels–Alder events with separate dienophiles. Overall, four
Reversal of regiospecificity in the kinetic vs. thermodynamic enolization of bicyclic ketones. Direct bridgehead functionalization of the bicyclo[5.3.1]undecane ring system
作者:Kenneth J. Shea、Steven T. Sakata
DOI:10.1016/s0040-4039(00)74233-x
日期:1992.7
deprotonation of bicyclo [5.3.1] undecenone 3 gives the more highly substituted bridgehead enolate under conditions of kinetic control while the less highly substituted enolate is formed under conditions of thermodynamic control. These findings allow for the direct bridgeheadfunctionalization of this important bicyclic skeleton.