Synthesis of Seleno-Dibenzocycloheptenones/Spiro [5.5] Trienones by Radical Cyclization of Biaryl Ynones

HA Goulart, RH Bartz, TJ Peglow… - The Journal of …, 2022 - ACS Publications
We report herein an alternative method for the synthesis of seleno-dibenzocycloheptenones
and seleno-spiro [5.5] trienones through the radical cyclization of biaryl ynones in the …

Fused multifunctionalized dibenzoselenophenes from tetraynes

Y Hu, J Ma, L Li, Q Hu, S Lv, B Liu… - Chemical …, 2017 - pubs.rsc.org
The facile synthesis of fused multifunctionalized dibenzoselenophenes by a one-pot–three-
step cascade hexadehydro-Diels–Alder reaction of tetraynes is reported. The overall …

Radical cyclization of alkynyl aryl ketones for the synthesis of 3-seleno-substituted thiochromones and chromones

RH Bartz, KB Silva, TJ Peglow, AM Barcellos… - Organic & …, 2022 - pubs.rsc.org
We report a strategy for the direct synthesis of 3-organylselanylthiochromones and 3-
organylselanylchromones via the radical cyclization reaction between alkynyl aryl ketones …

Arylselenyl Radical-Mediated Cyclization of N-(2-Alkynyl)anilines: Access to 3-Selenylquinolines

C Zhu, M Nurko, CS Day… - The Journal of Organic …, 2022 - ACS Publications
An efficient and novel approach to accessing 3-selenylquinolines from diaryl diselenides
and acyclic, selenium-free substrates is described. Preliminary mechanistic studies indicate …

Metal-free switchable ortho/ipso-cyclization of N-aryl alkynamides: divergent synthesis of 3-selenyl quinolin-2-ones and azaspiro [4, 5] trienones

H Sahoo, GS Grandhi, I Ramakrishna… - Organic & Biomolecular …, 2019 - pubs.rsc.org
A selenium radical triggered switchable ortho/ipso-cyclization cascade of N-aryl
alkynamides has been devised under metal-free conditions to access 3-selenyl quinolin-2 …

Selectfluor-mediated construction of 3-arylselenenyl and 3, 4-bisarylselenenyl spiro [4.5] trienones via cascade annulation of N-phenylpropiolamides with diselenides

JW Yuan, Q Chen, WT Wu, JJ Zhao, LR Yang… - New Journal of …, 2022 - pubs.rsc.org
A cascade annulation of terminal alkynyl amides with diselenides leading to the construction
of 3-arylselenenyl spiro [4.5] trienones was realized under mild conditions with Selectfluor …

Electrochemical Selenylative Carbannulation of Biaryl Ynones to Seleno-Dibenzocycloheptenones/Spiro [5.5] Trienones

C Raji Reddy, DH Kolgave - The Journal of Organic Chemistry, 2021 - ACS Publications
Electrooxidative-induced synthesis of structurally diverse seleno-dibenzocyclohepten-5-
ones and seleno-spiro [5.5] trienones by selenylative carbannulation of biaryl ynones with …

Visible-light mediated diarylselenylative cyclization of 1, 6-enynes

H Hou, Y Sun, Y Pan, H Yu, Y Han, Y Shi… - The Journal of …, 2020 - ACS Publications
We herein described a selenylative cyclization reaction of enynes by the utilization of
diselenides as radical sources. The visible-light irradiation of the reaction mixture enables …

Regioselective Formation of Tetrahydroselenophenes via 5-exo-dig-Cyclization of 1-Butylseleno-4-alkynes

RM Gai, RF Schumacher, DF Back, G Zeni - Organic letters, 2012 - ACS Publications
Results on the synthesis of tetrahydroselenophene derivatives from 1-butylseleno-4-alkynes
by electrophilic cyclization using iodine as the electrophilic source are presented. This …

Synthesis and reactivity of dibenzoselenacycloheptynes

G Almeida, LC Townsend, CR Bertozzi - Organic letters, 2013 - ACS Publications
Dibenzoselenacycloheptynes were prepared in three steps from commercially available
reagents and trapped in situ with benzyl azide to form the corresponding triazoles …