Visible Light Promoted Brominative Dearomatization of Biaryl Ynones to Spirocycles

B Roy, P Kuila, D Sarkar - The Journal of Organic Chemistry, 2023 - ACS Publications
… Our initial goal was to develop a radical spirocyclization process based on more frequently
… radical-based dearomative processes, (20) we hypothesized that biaryl-tethered activated …

Iron-Catalyzed Dearomatization of Biaryl Ynones with Aldehydes via Double C–H Functionalization in Eco-Benign Solvents: Highly Atom-Economical Synthesis of …

D Xia, XF Duan - The Journal of Organic Chemistry, 2021 - ACS Publications
… On the other hand, the radical dearomative formation of a … few reported examples of the
dearomative construction of spiro[5,5… dearomative 6-exo-trig spirocyclization of biaryl ynones with …

DTBP‐Mediated Cascade Spirocyclization and Dearomatization of Biaryl Ynones: Facile Access to Spiro[5.5]trienones through C(sp3)−H Bond Functionalization

MM Zhang, LY Shen, S Dong, B Li… - European Journal of …, 2021 - Wiley Online Library
… then applied for the reaction of other biaryl ynone derivatives with acetones toward spiro[5.5]…
-exo-trig radical spirocyclization on the biaryl ynones derived from the dearomative aryl ring. …

Electrochemical Arene Radical Cation Promoted Spirocyclization of Biaryl Ynones: Access to Alkoxylated Spiro [5, 5] trienones

W Zhou, ZQ Li, C Cheng, L Lu, R Yang, XR Song… - Organic …, 2023 - ACS Publications
… In conclusion, a novel electrochemical arene radical cation strategy for the dearomative
spirocyclization of biaryl ynones with nucleophilic alcohols has been developed, enabling the …

Visible light-induced selenylative spirocyclization of biaryl ynones toward the formation of selenated spiro [5.5] trienones

Z Chen, X Zheng, SF Zhou, X Cui - Organic & Biomolecular Chemistry, 2022 - pubs.rsc.org
… In conclusion, we have developed a simple and convenient visible-light induced dearomative
cascade cyclization of biaryl ynones with diselenides under photocatalyst and external …

Radical spirocyclization of biaryl ynones for the construction of NO 2-containing spiro [5.5] trienones

D Xia, LY Shen, Y Zhang, WC Yang - New Journal of Chemistry, 2022 - pubs.rsc.org
… addition/dearomative spirocyclization of biaryl ynones with … -oxidative dearomatization of
biaryl ynones with the bench-… initiated cascade reaction of biaryl ynones, generating RSO 2 - or …

Synthesis of polychloromethylated and halogenated spiro [5, 5] trienones via dearomative spirocyclization of biaryl ynones

JN Li, ZJ Li, LY Shen, P Li, Y Zhang… - Organic & Biomolecular …, 2022 - pubs.rsc.org
spirocyclization and dearomatization of biaryl ynones with –OMe groups at the para-position
of the dearomative … from simple polyhaloalkanes to alkynes in ynones offers a novel …

Construction of sulfonated spiro [5, 5] trienones from sulfur dioxide via iron-catalyzed dearomative spirocyclization of biaryls

FS He, L Su, F Yu, Z Tang, J Wu - Organic Chemistry Frontiers, 2022 - pubs.rsc.org
… Encouraged by the advances in the dearomative 6-exo-trig … that sulfonlylation of biaryl
ynones involving sulfur dioxide could … through dearomative spirocyclization of biaryl ynones with …

Recent Advances in the Construction of Spiro Compounds via Radical Dearomatization

WC Yang, MM Zhang, JG Feng - Advanced Synthesis & …, 2020 - Wiley Online Library
… In 2018, the first cascade radical addition/dearomative spirocyclization of ynones was
realized by Zhang and Zhu’ group through a reaction of biaryl ynones with diethylphosphite or …

Nitro-Spirocyclization of Biaryl Ynones with tert-Butyl Nitrite: Access to NO2-Substituted Spiro[5,5]trienones

Y Li, L Li, C Guo, Q Yan, H Zhou, Y Wang… - The Journal of …, 2023 - ACS Publications
… no p-MeO-containing dearomative aryl rings moiety of the … developed nitro-spirocyclization
of biaryl ynones with TBN to … Further studies on spirocyclization of biaryl ynones with other …