Cited by Six-membered ring systems: With O and/or S atoms

C–H activation-initiated spiroannulation reactions and their applications in the synthesis of spirocyclic compounds DOI

Qianting Zhou,

Bin Li, Xinying Zhang

et al.

Organic & Biomolecular Chemistry, Journal Year: 2024, Volume and Issue: 22(12), P. 2324 - 2338

Published: Jan. 1, 2024

This review summarizes the most recent progress made in C–H bond activation-initiated spiroannulation reactions and their applications construction of structurally diverse biologically valuable spirocyclic scaffolds.

Language: Английский

Citations

Microwave assisted N-Directed Pd-Catalyzed Direct ortho-Acyloxylation, and ortho-Hydroxylation of benzo[b][1,4]oxazin- 2-ones via C-H Activation DOI

Sandeep Kumar,

Aditi Arora,

Sumit Kumar

et al.

Tetrahedron, Journal Year: 2025, Volume and Issue: unknown, P. 134552 - 134552

Published: Feb. 1, 2025

Language: Английский

Citations

Synthesis of Polycyclic Heteroarenes via Rh(III)-Catalyzed Twofold C-H Activation of 3-Aryl-2H-benzo[b][1,4]oxazines and Annulation with α-Diazo-β-ketoesters DOI

Yiyue Li,

Li Song,

Haokang Du

et al.

The Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 14, 2025

An efficient Rh(III)-catalyzed annulation between 3-aryl-2H-benzo[b][1,4]oxazines and α-diazo-β-ketoesters was developed, affording a series of polycyclic heteroarenes in moderate to excellent yields with good functional group compatibility. The procedure featured high efficiency, redox neutrality, twofold ortho-C-H activation, dual [4 + 2] annulation. Moreover, several important intermediates products have been isolated as powerful evidence for the proposed reaction mechanism.

Language: Английский

Citations

Annulations involving p-benzoquinones: stereoselective synthesis of fused, spiro and bridged molecules DOI

Suven Das

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: 48(18), P. 8243 - 8276

Published: Jan. 1, 2024

The present review summarizes the recent advances (2018–2023) in stereoselective annulation involving p -benzoquinones for construction of fused, spiro and bridged/cage frameworks.

Language: Английский

Citations

Synthesis of Spiropyrans via Rh(III)-Catalyzed [3+3] Cyclization of 3-Aryl-2H-1,4-benzoxazine and Diazonaphthalene-2H-ones DOI

Mengke Wen,

Yiyue Li,

Haokang Du

et al.

Chinese Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 44(7), P. 2223 - 2223

Published: Jan. 1, 2024

Language: Английский

Citations

Rhodium‐Catalyzed Regioselective C7_Ar‐Functionalization of Tryptophan with Quinones and its Late Stage Peptide Exemplification DOI

Disha Tank,

Narendra Dinkar Kharat,

Kiran Bajaj

et al.

Asian Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 12(12)

Published: Nov. 10, 2023

Abstract Pivaloyl‐directed Rh(III)‐catalyzed regioselective C7 Ar ‐H functionalization of protected tryptophans were accomplished with 1,4‐benzoquinones, furnishing a series quinone‐appended tryptophan‐based unnatural amino acids in high yields. Further, the late stage on tryptophan‐containing dipeptides was achieved 1,4‐benzoquinones moderate reactivity.

Language: Английский

Citations

Synthesis of spiropyrans via Ru(ii)-catalyzed coupling of 3-aryl-2H-benzo[b][1,4]oxazines with benzoquinones DOI

Mengke Wen,

Mingjie Zhang,

Fan Gu

et al.

Organic & Biomolecular Chemistry, Journal Year: 2023, Volume and Issue: 22(5), P. 998 - 1009

Published: Dec. 26, 2023

An efficient Ru( ii )-catalyzed C–H activation-based spiroannulation of benzoxazines with easily available benzoquinone and N -sulfonyl quinone monoimine has been realized, providing a straightforward strategy to access NH-containing spiropyrans.

Language: Английский

Citations

Six-membered ring systems: With O and/or S atoms DOI

Clementina M.M. Santos, Artur M. S. Silva

Progress in heterocyclic chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 421 - 484

Published: Jan. 1, 2024

Language: Английский

Citations