唐勇课题组

A highly diastereoselective copper‐catalyzed multicomponent cyclization of exocyclic enol ethers/enamines with methylene malonate and aldehydes has been developed to furnish spiroheterocyclic tetrahydropyrans in high yields with greater than 95:5 d.r. This method is practical, in that 36 examples, including a range of aldehydes and exo‐...

• Controlled ATRP of styrene type monomers were achieved at low temperatures.
• ATRP of 4-MeOSt provided polymers rather than oligomers.
• Stereospecificity of polystyrene was gradually enhanced by lowering the temperature.
•A series of novel SaBOX ligands exhibited high activity at low temperature.

A series of fluorinated polyolefins has been efficiently synthesized via the copolymerization of ethylene with 5-(perfluoro-n-alkyl)norbornenes by employing a class of [ONS] titanium catalysts, which possess an open coordination space environment and exhibited excellent tolerance to fluorine atom and excellent catalytic activity (up to 1....

A new regioselective method for the synthesis of multifunctionalized indoles from [3 + 2] annulation of 2-bromocyclopropenes with anilines has been developed. By employing a nickel complex as a catalyst, 27 examples of indole products were obtained in good yields with excellent regioselectivity. Synthetic utility of the resulting product ...

In the presence of 4 Å MS, both all-alkene [2 + 2 + 2] and [2 + 2] cyclizations of dimethyl methylenemalonate (DMM) with N-sulfonyl enamides were selectively achieved under In(OTf)3 and Cu(OTf)2 catalysis, respectively. In(OTf)3-catalyzed [4 + 2] cyclization of the sulfonylamidocyclobutanes with another molecule of DMM or other...