A new method for the Cu(OAc)2-catalyzed phenylation of tertiaryalcohols under mild basic conditions is described. Triphenylbismuth(V) diacetate and tetraphenylbismuth reagents undergo cross-coupli...
<i>N</i>-Arylation of Pyridin-2(1<i>H</i>)-ones with Pentavalent Organobismuth Reagents under Copper-Free Conditions
作者:Kazuhiro Ikegai、Yuzo Nagata、Teruaki Mukaiyama
DOI:10.1246/bcsj.79.761
日期:2006.5
and the related heteroaromatic lactams has been established via ligand-coupling reactions using tri- or tetra-aryl organobismuth(V) reagents such as triarylbismuth dichlorides. Also, N-alkenylation of pyridin-2(1H)-one was achieved similarly by using alkenyltriarylbismuth(V) reagents.
Provided are organometallic compounds comprising a ligand L
A
comprising structures of both Formula I and Formula II:
Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.
Asymmetric Michael addition of silyl nitronates to cyclic α,β-unsaturated ketones catalyzed by chiral quaternary ammonium bifluorides: isolation and selective functionalization of enol silyl ethers of optically active γ-nitro ketones
Highlyenantioselective Michael addition of silyl nitronates to cyclic α,β-unsaturated ketones has been accomplished by the utilization of N-spiro C2-symmetric chiral quaternary ammonium bifluoride 1 as an efficient catalyst, offering a new route to the enol silyl ethers of optically active γ-nitro ketones. The synthetic utility of this transformation has been demonstrated by the diastereoselective