Catalyst‐ and Additive‐Free Methodical Ring Expansion Protocol to Access Benzooxepino‐Fused Pyrroles DOI
Galla V. Karunakar,

Komalla Sunil,

Perla Bharath Kumar

et al.

Chemistry - An Asian Journal, Journal Year: 2022, Volume and Issue: 18(4)

Published: Dec. 26, 2022

An efficient metal-free, additive-free synthetic method was developed to access benzooxepino-fused pyrrole derivatives from alkynyl substituted aziridines. In this organic transformation, two new C-C bonds were formed via initial cleavage of bond aziridine ring by in situ generated azomethine ylides. Moderate excellent yields pyrroles obtained atom economically the presence t-BuOH one-pot.

Language: Английский

Mechanisms of Copper-Induced Autophagy and Links with Human Diseases DOI Creative Commons
Yuanyuan Fu, Shuyan Zeng, Zhenlin Wang

et al.

Pharmaceuticals, Journal Year: 2025, Volume and Issue: 18(1), P. 99 - 99

Published: Jan. 15, 2025

As a structural and catalytic cofactor, copper is involved in many biological pathways required for the biochemistry of all living organisms. However, excess intracellular can induce cell death due to its potential catalyze generation reactive oxygen species, thus homeostasis strictly regulated. And deficiency or accumulation connected with various pathological conditions. Since success platinum-based compounds clinical treatment types neoplasias, metal-based drugs have shown encouraging perspectives drug development. Compared platinum, an essential trace element that may better prospects development than platinum. Recently, therapeutic role copper-induced autophagy chronic diseases such as Parkinson’s, Wilson’s, cardiovascular disease has already been demonstrated. In brief, ions, numerous complexes, copper-based nano-preparations could autophagy, lysosome-dependent process plays important human diseases. this review, we not only focus on current advances elucidating mechanisms compounds/preparations regulation but also outline association between

Language: Английский

Citations

0

Gold(I)-Catalyzed Regioselective Cyclization to Access Cyclopropane-Fused Tetrahydrobenzochromenes DOI
Perla Bharath Kumar,

Chittala Emmaniel Raju,

Patel Hinal Chandubhai

et al.

Organic Letters, Journal Year: 2022, Volume and Issue: 24(37), P. 6761 - 6766

Published: Sept. 14, 2022

Gold(I)-catalyzed efficient synthetic transformation was achieved to access the tetrahydrobenzo[h]cyclopropa[c]chromenes from allyl-substituted 1,6-diynes. Cyclopropane-fused tetrahydrobenzochromenes were obtained regioselectively in ≤92% yields. In this atom-economic organic transformation, three new C-C bonds formed sequentially one pot.

Language: Английский

Citations

13

Copper-catalyzed [1,3]-nitrogen rearrangement ofO-aryl ketoximesviaoxidative addition of N–O bond in inverse electron flow DOI Creative Commons

Mao Suzuki,

Masahiro Terada, Itaru Nakamura

et al.

Chemical Science, Journal Year: 2023, Volume and Issue: 14(21), P. 5705 - 5711

Published: Jan. 1, 2023

[1,3]-Nitrogen rearrangement reactions of O -aryl ketoximes was catalytically promoted by IPrCuBr and BF 3 ·OEt 2 . The oxidative addition the N–O bond to Cu catalyst is accelerated donation electrons from both nitrogen oxygen atoms.

Language: Английский

Citations

6

Gold(I)‐Catalyzed Regioselective Synthesis of Indenylidene Derivatives via 1,5‐Acryl Migration DOI
Galla V. Karunakar, Perla Bharath Kumar,

Pammi Venkata Rami Reddy

et al.

Chemistry - An Asian Journal, Journal Year: 2024, Volume and Issue: 19(14)

Published: May 8, 2024

A novel gold (I)-catalyzed synthetic strategy has been achieved for an efficient construction of indenylidene derivatives from substituted 1,6-diynes. This reaction describes the unique reactivity catalysis in facilitating intramolecular [3,3]-sigmatropic rearrangement, 5-exo dig cyclization followed by 1,5-migration acryl group, resulting formation indenylidenes. Various indenylidenes were successfully synthesized with up to 92 % yields. In this protocol, two new C-C bonds sequentially formed atom economically one pot.

Language: Английский

Citations

1

Synthesis of Isoquinoline-Derived Diene Esters and Quinolin-2(1H)-ylidene-Substituted 1,5-Diones from Enynones and (Iso) Quinoline N-Oxides DOI

Gottam Sreenivasulu,

Chittala Emmaniel Raju,

Manda Shareni Palaci

et al.

Organic Letters, Journal Year: 2022, Volume and Issue: 25(1), P. 115 - 119

Published: Dec. 30, 2022

An efficient synthetic method was developed to access isoquinoline-derived diene esters from enynones and isoquinoline-N-oxides in an atom-economic manner. The isoquinoline-substituted were obtained moderate excellent yields via [3 + 2]-cycloaddition isoxazole ring opening followed by a [1,5]-sigmatropic rearrangement reaction, which resulted one C–C two C–O bond formations. Further, quinolin-2(1H)-ylidene-substituted 1,5-diones achieved reaction of with quinoline-N-oxides very good high yields.

Language: Английский

Citations

6

Ruthenium‐Catalyzed Regioselective 1,2‐Hydrosilylation of N‐Heteroarenes DOI
Xinyuan Ma, Manoj V. Mane, Luigi Cavallo

et al.

European Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 26(10)

Published: Jan. 27, 2023

Abstract An efficient method for the regioselective 1,2‐hydrosilylation of N‐heteroarenes is reported utilizing silanes as hydride donor. The ruthenium complex [RuCl(PPh 3 ) 2 (η 5 ‐(3‐phenylindenylidene))], a versatile catalyst is, first time, employed in this catalytic reaction. displays high efficiency at low loading and operates under mild conditions. This approach showcases compatibility regioselectivity with quinolines bearing different substituents related N‐ heterocyclic compounds. mechanism transformation was probed by performing stoichiometric reactions examined using DFT calculations.

Language: Английский

Citations

3

Dual gold-catalyzed regioselective synthesis of benzofulvenes via 5-endo dig cyclization DOI

Gottam Sreenivasulu,

Balasubramanian Sridhar,

Galla V. Karunakar

et al.

Organic & Biomolecular Chemistry, Journal Year: 2023, Volume and Issue: 21(38), P. 7799 - 7807

Published: Jan. 1, 2023

Gold-catalyzed regioselective synthesis of benzofulvenes has been developed from substituted allyloxy 1,5-diynes via 5- endo dig cyclization.

Language: Английский

Citations

3

Silver‐catalyzed Regioselective Synthesis of N‐aryl‐1H‐pyrazolyl‐substituted Benzenesulfonamides from Ynamides and Pyrazoles DOI
Galla V. Karunakar,

Chittala Emmaniel Raju,

K. Himaja

et al.

Chemistry - An Asian Journal, Journal Year: 2023, Volume and Issue: 18(15)

Published: June 21, 2023

Silver-catalyzed N-aryl-1H-pyrazolyl substituted benzenesulfonamide derivatives were obtained regioselectively from ynamides and pyrazoles. In this intermolecular organic transformation, several benzenesulfonamides in good to excellent yields by forming a new C-N bond under mild reaction conditions.

Language: Английский

Citations

1

Access to tetrahydrophenanthridine N-oxides via Rh(III)-catalyzed cascade C–H activation/cyclization of cyclic 2-diazo-1,3-diones and aryloximes DOI

Yinyin Feng,

Guanghao Shi,

Liwei Xiang

et al.

Tetrahedron, Journal Year: 2023, Volume and Issue: 144, P. 133584 - 133584

Published: Aug. 4, 2023

Language: Английский

Citations

1

Six-membered ring systems: pyridines and benzo derivatives DOI

Jeanese C. Badenock

Progress in heterocyclic chemistry, Journal Year: 2023, Volume and Issue: unknown, P. 383 - 425

Published: Jan. 1, 2023

Language: Английский

Citations

1