A visible‐light photoredox‐catalyzed reaction of tetrahydroisoquinolines with β‐fluorinated gem‐diols results in the formation of C1‐monofluoromethylated tetrahydroisoquinolines via C(sp3)Hbondactivation. This protocol provides a new method to introduce a CF group with stable, easily‐prepared monofluorinated gem‐diol as CF source. A mechanistic investigation is presented based on control experiments
Three unprecedented2D [4+3] covalentorganicframeworks (TTCOF-1, TTCOF-2, and TTCOF-3) have been prepared by substoichiometric condensation of tetratopic and tritopic monomers, overcoming the limitations of the design rules of conventional topologies. By reticulating the tetraphenylethylene (TPE)-based and triazine-based moieties into COF frameworks, novel electron donor-acceptor (D-A) type structures
An efficient asymmetric aerobic oxidation of tetrahydroisoquinolines with terminal alkynes was realized under mild reaction conditions using O2 as the sole oxidant. A chiral N,N′-dioxide/zinc(II)/iron(II) bimetallic cooperative catalytic system proves to be efficient for the formation of various α-alkynyl substituted tetrahydroisoquinolines in good to excellent yields and enantioselectivities. A primary
A novel bifunctional organic sponge photocatalyst can enable the efficient coupling of tertiary amines with ketones in water. The asymmetric transformation can be also achieved by using this sponge photocatalyst.
quantum dots (QDs) can activate α-C-H bond of THF via forming QDs/THF conjugates. Under visible light irradiation, the resultant alkoxyalkyl radical directly engages in radical cross-coupling with α-amino radical from amino C-H bonds or radicaladdition with alkene or phenylacetylene, respectively. In contrast to stoichiometric oxidant or hydrogenatom transfer reagents required in previous studies, the