Synthesis, Год журнала: 2023, Номер 55(18), С. 2797 - 2798
Опубликована: Авг. 29, 2023
Received: 03 August 2023 Accepted after revision: Article published online:29
Язык: Английский
Science China Chemistry, Год журнала: 2023, Номер 66(11), С. 3178 - 3185
Опубликована: Окт. 7, 2023
Язык: Английский
Процитировано
8
Chem & Bio Engineering, Год журнала: 2024, Номер 1(4), С. 357 - 365
Опубликована: Фев. 26, 2024
Lignin, characterized by its amorphous, heavily polymerized structure, is a primary natural source of aromatic compounds, yet complex constitution poses considerable challenges in transformation and utilization. Therefore, the selective cleavage C-C bonds represents critical challenging step lignin degradation, essential for production high-value compounds. In this study, we report simple electrocatalytic approach valorization via bond developing nonmetallic electrocatalyst carbon-based materials. It found that hydrophilicity hydrophobicity have significant effect on degradation process. Under mild conditions, hydrophilic carbon paper exhibits 100% substrate conversion, yielding 97% benzaldehyde 96% quinone with ionic liquid electrolytes. The mechanism study shows catalyst higher surface defects favors electron transfer oxidative process bonds. These results signify substantial advancement offering an environmentally friendly, metal-free electrochemical route.
Язык: Английский
Процитировано
2
Organic & Biomolecular Chemistry, Год журнала: 2023, Номер 21(43), С. 8667 - 8674
Опубликована: Янв. 1, 2023
In this study, we present an electrochemical approach for the synthesis of guanidines from isothiocyanates and amines in a single reaction vessel. This one-pot operation takes place aqueous media, utilizing undivided cell setup with NaI serving as both electrolyte mediator. The process involves situ generation thiourea, followed by electrolytic guanylation amines. Under ambient temperature conditions, successfully demonstrated formation 30 different guanidine compounds, achieving yields ranging fair to excellent. Furthermore, method could be carried out on gram scale good yield. protocol stands its cost-effectiveness, step-economical design, high tolerance towards various functional groups, environmentally friendly conditions.
Язык: Английский
Процитировано
5
Chemical Communications, Год журнала: 2023, Номер 60(4), С. 404 - 407
Опубликована: Ноя. 28, 2023
The “self-adaptability” of galvanostatic electrolysis was shown to assist a multistage unprecedented chemo- and diastereoselective electrochemically promoted cyclodimerization chalcones.
Язык: Английский
Процитировано
5
Organic & Biomolecular Chemistry, Год журнала: 2024, Номер 22(11), С. 2226 - 2230
Опубликована: Янв. 1, 2024
A cascade annulation of indazole aldehydes with propargylic amines has been developed to synthesize pyrazino[1,2- b ]indazoles under additive-free conditions. Some exhibit significant antifungal activity.
Язык: Английский
Процитировано
1
The Journal of Organic Chemistry, Год журнала: 2024, Номер 89(7), С. 4673 - 4683
Опубликована: Март 13, 2024
The cascade electrochemical C3-selective aerobic oxygenation of 2-substituted indoles and [5 + 3] annulation with amidines through an undivided cell galvanostatic method employing molecular oxygen "electricity" as green oxidants was developed. This protocol provides efficient direct approach to eight-membered benzo[1,3,5]triazocin-6(5H)-ones. Mechanistic studies suggested that two subsequent processes both proceeded radical pathways.
Язык: Английский
Процитировано
1
Green Chemistry, Год журнала: 2024, Номер 26(19), С. 10308 - 10313
Опубликована: Янв. 1, 2024
An oxidant and quaternary ammonium salt-free electrosynthesis of 6-6-5 fused systems was developed with excellent atom step economy.
Язык: Английский
Процитировано
1
The Journal of Organic Chemistry, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 29, 2024
An electrochemical tandem cyclization of enaminones with amidines has been reported for the first time using dibromomethane as an initiating agent in undivided cell. Following this protocol, a vast variety polysubstituted 5-acylimidazoles were obtained moderate to good yields without use external oxidants. Mechanistic studies indicate that bromide anion, electroreductively generated from dibromomethane, acts redox mediator complete catalytic cycle.
Язык: Английский
Процитировано
1
Organic & Biomolecular Chemistry, Год журнала: 2023, Номер 21(48), С. 9524 - 9529
Опубликована: Янв. 1, 2023
An eco-friendly and metal-free method for the synthesis of tetrahydrodibenzo[b,g][1,8]naphthyridin-1(2H)-ones was established. Quinoline-derived dipolarophiles cyclic enaminones as starting materials undergo a 1,4-Michael addition/SNAr tandem annulation reaction affording target products. This approach features transition conditions, good functional group tolerance operational simplicity.
Язык: Английский
Процитировано
2
Synthetic Communications, Год журнала: 2024, Номер 54(20), С. 1707 - 1724
Опубликована: Авг. 11, 2024
Trifluoromethyl heterocyclic compounds have high lipophilicity, metabolic stability and binding selectivity, so it is very important to develop their synthetic methods. This review provides an overview of synthesis trifluoromethyl substituted from β-trifluoromethylated acrylates over the period 2018 present.
Язык: Английский
Процитировано
0