[4+ 2] cycloaromatization of 4-bis (methylthio)-3-buten-2-one with active methylene ketones: a simple and facile phenol annulation

O Barun, S Nandi, K Panda, H Ila… - The Journal of Organic …, 2002 - ACS Publications
A new method for β-phenol annulation involving base-induced [4C+ 2C] cycloaromatization
of readily available 4-bis (methylthio)-3-buten-2-one with a variety of cyclic and acyclic …

One-pot generation of benzynes from 2-aminophenylboronates via a Rh (II)-catalyzed N–H amination/oxidation/elimination cascade process

M Ito, A Tanaka, K Hatakeyama, E Kano… - Organic Chemistry …, 2020 - pubs.rsc.org
This article describes the first application of 2-aminophenylboronates as precursors for
benzynes. Utilizing Rh2 (HNCOCF3) 4 as the catalyst, Rh (II)-nitrene-mediated N–H …

PhI (OAc) 2-mediated dearomative C–N coupling: facile construction of the spiro [indoline-3, 2′-pyrrolidine] skeleton

Y Zhou, D Li, S Tang, H Sun, J Huang… - Organic & Biomolecular …, 2018 - pubs.rsc.org
A facile construction of the spiro [indole-3, 2′-pyrrolidine] skeleton, through
diacetoxyiodobenzene (PIDA) mediated C–N bond-forming dearomatization of C3 …

Visible-light-induced annulation of iodonium Ylides and 2-isocyanobiaryls to access 6-arylated phenanthridines

JY Chen, HY Wu, HY Song, HX Li, J Jiang… - The Journal of …, 2023 - ACS Publications
A 1, 2, 3, 5-tetrakis (carbazol-9-yl)-4, 6-dicyanobenzene (4-CzIPN)-photocatalyzed cascade
arylation/cyclization reaction of 2-isocyanobiaryls and iodonium ylides was established for …

A facile phenol-driven intramolecular diastereoselective thermal/base-catalyzed dipolar [2+ 2] annulation reactions: An easy access to complex bioactive natural and …

M Mondal, VG Puranik, NP Argade - The Journal of Organic …, 2007 - ACS Publications
The complex bioactive natural and unnatural benzopyran congeners have been synthesized
using one-/two-step approaches in very good yields from the reactions of two different …

(3+ 3) Annulation of acetoxy allenoates with enolisable carbonyl substrates leading to fused pyrans

S Debnath, S Chauhan, KCK Swamy - Organic & Biomolecular …, 2023 - pubs.rsc.org
Lewis base dependent (3+ 3) annulation of δ-acetoxy allenoates with benzofuranone,
pyrazolone, and Boc-protected oxindole is reported. In the presence of catalytic DBU …

Radical‐Mediated Non‐Dearomative Strategies in Construction of Spiro Compounds

R Pawlowski, P Skorka… - Advanced Synthesis & …, 2020 - Wiley Online Library
In recent years, spirocyclic compounds have attracted a significant interest in medicinal
chemistry due to their considerable biological activities. The general and widely used …

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
DTBP‐Mediated Cascade Spirocyclization and Dearomatization of Biaryl Ynones: Facile Access
to Spiro[5.5]trienones through C(sp3)−H Bond Functionalization - Zhang - 2021 - European …

Photoredox-enabled dearomative [2π+ 2σ] cycloaddition of phenols

S Dutta, D Lee, K Ozols, CG Daniliuc… - Journal of the …, 2024 - ACS Publications
Dearomative photocycloaddition of monocyclic arenes is an appealing strategy for
comprehending the concept of “escape from flatland”. This brings the replacement of readily …

Merging the Norrish type I reaction and transition metal catalysis: photo-and Rh-promoted borylation of C–C σ-bonds of aryl ketones

Y Fujimaki, N Iwasawa, J Takaya - Chemical Science, 2023 - pubs.rsc.org
Synthesis of arylboronates via borylation of C–C σ-bonds of aryl ketones was achieved by
the combined use of photoenergy and a Rh catalyst. The cooperative system enables α …