Results 61 to 70 of about 45,374 (213)

Synthesis of Tetrasubstituted Pyrroles from Terminal Alkynes and Imines

, 2013
Tetrasubstituted pyrroles can be obtained via the reaction of terminal alkynes and Imines using (BuLi)-Bu-n as the base In one step with high chemoselectivity (method 1).
Wu, Fan, Wan, Boshun, Hu, Yancheng, 万伯顺, Wang, Dongping, Wang, Chunxiang   +5 more
core   +1 more source

Cobalt-catalyzed hydrothiolation of alkynes for the diverse synthesis of branched alkenyl sulfides

Nature Communications
Alkenyl sulfides have gained increasing prominence in medicinal chemistry and materials. Hydrothiolation of alkynes for the diverse synthesis of alkenyl sulfides is an appealing method.
Jiale Ying, Yan Tan, Zhan Lu
doaj   +1 more source

Rhodium/Ming-Phos-catalyzed asymmetric annulation reaction of silacyclobutanes with terminal alkynes

Green Synthesis and Catalysis
Asymmetric ring-expansion reactions of silacyclobutanes (SCBs) with alkynes have evolved as one of the powerful protocols for the construction of silicon-stereogenic compounds.
Yue Sun, Kaida Zhou, Chun Ma, Zhiming Li, Junliang Zhang   +4 more
doaj   +1 more source

syn-Selective alkylarylation of terminal alkynes via the combination of photoredox and nickel catalysis

Nature Communications, 2018
Converting alkynes into alkenes with high stereoselectivity via two consecutive C-C bond forming steps is a desirable process, yet very challenging. Here, the authors describe a dual photoredox-nickel catalytic system for the regio- and syn-selective ...
Lei Guo, Fan Song, Shengqing Zhu, Huan Li, Lingling Chu   +4 more
doaj   +1 more source

Radical‐Mediated Sulfonylarylation of Unactivated Alkynes via Intramolecular 1,4‐(hetero)aryl Migration

ChemistryEurope
Radical‐mediated difunctionalization of alkynes is an extensively explored strategy for diverse alkyne transformation and utilization. However, the direct difunctionalization of unactivated alkynes remains a significant challenge.
Xu Zhang, Fushan Chen, Chen Zhu
doaj   +1 more source

Silicon-Tethered Cyclocarbonylation of Alkynes

, 2016
Temporary union of alkynes in the Fe(CO)5-promoted cyclocarbonylation provides a method for carbonylative cross-coupling of alkynes to construct unsymmetrically substituted ...
Jin Bum Kim (2879435), Anthony J. Pearson (1903234)   +1 more
core   +2 more sources

Hydrotelluration of alkynes: a unique route to Z-vinyl organometallics

Journal of the Brazilian Chemical Society, 2001
The hydrotelluration reaction of alkynes is reviewed. The transformation of vinylic tellurides into reactive vinyl organometallics and the coupling reactions of vinylic tellurides with alkynes and organometallics are presented.
Vieira Maurício L., Zinn Fabiano K., Comasseto João V.   +2 more
doaj  

‐hydroxybenzimidoyl chloride with alkynes

, 2019
4‐[18F]Fluoro‐N‐hydroxybenzimidoyl chloride (18FBIC), an 18F‐labelled aromatic nitrile oxide, was developed as building block for Ru‐promoted 1,3 dipolar cycloaddition with alkynes.
Roscales García, Silvia, Kniess, Torsten, Torsten Kniess, Silvia Roscales   +3 more
core   +1 more source

Synthesis of 9-Alkylidene-9H-fluorenes by a Novel, Palladium-Catalyzed Cascade Reaction of Aryl Halides and 1-Aryl-1-alkynes

, 2016
In the presence of a palladium catalyst and NaOAc, aryl iodides react with 1-aryl-1-alkynes to afford 9-alkylidene-9H-fluorenes in good yields. The products from this reaction are highly dependent on the base employed. This process appears to involve (1)
Richard C. Larock (1353099), Qingping Tian (1633456)   +1 more
core   +1 more source

Expanding the Frontier of Linear Drug Design: Cu‐Catalyzed Csp–Csp3‐Coupling of Electron‐Deficient SF4‐Alkynes with Alkyl Iodides

Advanced Science
Despite the attractive properties of tetrafluorosulfanyl (SF4) compounds in drug discovery, medicinal research on SF4 molecules is hindered by the scarcity of suitable synthetic methodologies.
Srikanth Reddy Narra, Muhamad Zulfaqar Bacho, Masashi Hattori, Norio Shibata   +3 more
doaj   +1 more source