Recent Advances in the Cascade Cyclization of Alkyne Units for the Construction of Benzofluorenes

S Jiang, R Yang, XR Song… - Advanced Synthesis & …, 2024 - Wiley Online Library
Benzofluorenes are an important class of polycyclic aromatic hydrocarbons (PAHs), which
are widely used in materials science for light‐sensitive electronic components. In addition …

Cascade Cyclization of 1,5-Diynols and (RO)2P(O)SH to Construct Benzo[b]fluorenyl S-Alkyl Phosphorothioates under Catalyst-Free Conditions

S Jiang, S Du, J Bai, X Chen, M Liang… - The Journal of …, 2023 - ACS Publications
An efficient and practical cascade cyclization of 1, 5-diynols with (RO) 2P (O) SH as the acid
promoter and nucleophile under mild conditions was developed. A variety of highly …

Direct Synthesis of Benzo[b]fluorenyl Thiophosphates via Tandem Cyclization of Diynols with (RO)2P(O)SH

S Du, S Jiang, R Yang, F Jin, H Huang, WF Tian… - Organic …, 2023 - ACS Publications
A general and metal-free protocol for the construction of benzo [b] fluorenyl thiophosphates
was developed through the cascade cyclization of easily prepared diynols and (RO) 2P (O) …

Copper(I)-Catalyzed Syntheses of Benzo[b]fluorenes by the Cascade Reactions of 2-Alkynylbenzaldehyde N-Tosylhydrazones and Aromatic Terminal Alkynes

J Lv, H Liu, L Lu, R Hua - The Journal of Organic Chemistry, 2022 - ACS Publications
Benzo [b] fluorenes were synthesized via CuI-catalyzed cascade reactions of 2-
alkynylbenzaldehyde N-tosylhydrazones and aromatic terminal alkynes in the presence of …

TFA-Promoted Cascade Sulfonylation/Rearrangement/Cyclization of 1,5-Diynols and Sodium Sulfinates to Construct Sulfonylated Benzo[b]fluorenes

S Jiang, M Liang, J Bai, R Yang, X Chen… - The Journal of …, 2024 - ACS Publications
A novel conversion of 1, 5-diynols into sulfonylated benzo [b] fluorenes is reported by a TFA-
promoted cascade cyclization with sodium sulfinates under mild conditions. This strategy …

Direct Photochemical Synthesis of Substituted Benzo[b]fluorenes

R Crawford, Y Ortin, B Twamley, M Baumann - Organic Letters, 2024 - ACS Publications
We report a new and straightforward route toward substituted benzo [b] fluorenes via the
direct photochemical conversion of alkynylated chalcones. This transformation exploits a …

Iron-catalyzed cascade cyclization of diaryldiyn-3-ones with P (O) H compounds: a rapid method for accessing 10-phosphorylated benzo [b] fluorenones

Y Cao, Y Ying, J Wu, F Chen, G Tang… - Organic Chemistry …, 2024 - pubs.rsc.org
A new inexpensive iron-catalyzed phosphination of diaryldiyn-3-ones under mild conditions
for the synthesis of 10-phosphorylated benzo [b] fluorenones is presented. The reaction is …

Synthesis of α-CF 3-substituted E-dehydroornithine derivatives via copper (i)-catalyzed hydroamination of allenes

AN Philippova, DV Vorobyeva, F Monnier… - Organic & Biomolecular …, 2020 - pubs.rsc.org
An efficient synthetic approach to novel α-CF3-substituted E-dehydroornithine derivatives
and their phosphorus analogues has been developed via the Cu (I)-catalyzed …

Allene-derived gold and platinum complexes: synthesis and first applications in catalysis

HK Maliszewska, DL Hughes, MP Muñoz - Dalton Transactions, 2020 - pubs.rsc.org
We report here the synthesis, full characterisation and first application in catalysis of novel
Au (I), Au (III) and Pt (II) carbene-type complexes formed from bis (pyridyl) allenes. The …

DABCO-based ionic liquid-modified magnetic nanoparticles supported gold as an efficient catalyst for A3 coupling reaction in water

M Kardan, M Gholinejad, F Saadati, S Nayeri… - Journal of the Iranian …, 2022 - Springer
In this work, a new heterogeneous catalyst, comprising gold supported on DABCO-triazole
ionic liquid-modified magnetic nanoparticles (Fe3O4@ DT-Au), is developed for A3-coupling …