N-Substitution dependent stereoselectivity switch in palladium catalyzed hydroalkynylation of ynamides: a regio and stereoselective synthesis of ynenamides
N-Substitution dependent stereoselectivity switch in palladium catalyzed hydroalkynylation of ynamides: a regio and stereoselective synthesis of ynenamides
作者:Vikas Dwivedi、Madala Hari Babu、Ruchir Kant、Maddi Sridhar Reddy
DOI:10.1039/c5cc06251a
日期:——
A palladium catalysed regioselective hydroalkynylation of ynamides for ynenamides is achieved with an N-substitution dependent stereoselectivity switch.
通过钯催化的选择性加氢炔化反应,可以将炔酰胺转化为烯酰胺,其立体选择性取决于N-取代基的选择。
Catalytic Asymmetric Dihydroxylation of Enamides and Application to the Total Synthesis of (+)-Tanikolide
作者:Benoit Gourdet、Hon Wai Lam
DOI:10.1002/anie.201004328
日期:2010.11.8
Asymmetricdihydroxylation of β,β′‐ disubstituted enamides afforded chiral tertiary‐alcohol‐containing α‐hydroxyaldehydes and 1,2‐diols with high enantioselectivity (see scheme). This method was applied to the total synthesis of the antifungal natural product (+)‐tanikolide, as well as the synthesis of an intermediate en route to (S)‐oxybutynin.