N-Alkylation of substituted alcohols through self-supported mesoporous CuMn2O4 DOI

Lanyan Shou,

Xue Yang,

Caihong Feng

и другие.

New Journal of Chemistry, Год журнала: 2023, Номер 47(41), С. 19146 - 19154

Опубликована: Янв. 1, 2023

Synergistic catalyzed N -alkylation hydrogen transfer of sulfonamides/anilines with alcohols through a self-supported mesoporous CuMn 2 O 4 .

Язык: Английский

Selective C‐alkylation Between Alcohols Catalyzed by N‐Heterocyclic Carbene Molybdenum DOI
Jiahao Liu, Weikang Li, Yinwu Li

и другие.

Chemistry - An Asian Journal, Год журнала: 2021, Номер 16(20), С. 3124 - 3128

Опубликована: Сен. 16, 2021

The first implementation of a molybdenum complex with an easily accessible bis-N-heterocyclic carbene ligand to catalyze β-alkylation secondary alcohols via borrowing-hydrogen (BH) strategy using as alkylating agents is reported. Remarkably high activity, excellent selectivity, and broad substrate scope compatibility advantages catalyst usage low 0.5 mol%, catalytic amount NaOH the base, H2 O by-product are demonstrated in this green step-economical protocol. Mechanistic studies indicate plausible outer-sphere mechanism which alcohol dehydrogenation rate-determining step.

Язык: Английский

Процитировано

22
Disarming the alkoxide trap to access a practical FeCl3 system for borrowing-hydrogen N-alkylation DOI
Zongren Ye,

Yang Zhenjie,

Chenhui Yang

и другие.

Organic Chemistry Frontiers, Год журнала: 2022, Номер 9(18), С. 4803 - 4817

Опубликована: Янв. 1, 2022

Disarming the alkoxide trap using an in situ reduction strategy to access a practical FeCl 3 and N -heterocyclic carbene system for borrowing-hydrogen -alkylation.

Язык: Английский

Процитировано

15
A sustainable strategic approach for N-alkylation of amines with activation of alcohols triggered via a hydrogen auto-transfer reaction using a Pd(ii) complex: evidence for metal–ligand cooperativity DOI

Virendra Kumar Chaudhary,

Prashant Kukreti,

Keshav Sharma

и другие.

Dalton Transactions, Год журнала: 2024, Номер 53(20), С. 8740 - 8749

Опубликована: Янв. 1, 2024

This work describes a new well-defined, air-stable, phosphine free palladium(II) [Pd(L)Cl] (1) catalyst. catalyst was utilized for

Язык: Английский

Процитировано

3
Iridium and copper supported on silicon dioxide as chemoselective catalysts for dehydrogenation and borrowing hydrogen reactions DOI

Guanxin Zhu,

Zheng‐Chao Duan, Haiyan Zhu

и другие.

Molecular Catalysis, Год журнала: 2021, Номер 505, С. 111516 - 111516

Опубликована: Март 23, 2021

Язык: Английский

Процитировано

18
Advances in Group VI Metal‐Catalyzed Homogeneous Hydrogenation and Dehydrogenation Reactions DOI Open Access

Tushar Singh,

Vaishnavi Atreya,

Sachin Jalwal

и другие.

Chemistry - An Asian Journal, Год журнала: 2023, Номер 18(23)

Опубликована: Окт. 10, 2023

Transition metal-catalyzed homogeneous hydrogenation and dehydrogenation reactions for attaining plethora of organic scaffolds have evolved as a key domain research in academia industry. These protocols are atom-economic, greener, line with the goal sustainability, eventually pave way numerous novel environmentally benign methodologies. Appealing progress has been achieved realm catalysis utilizing noble metals. Owing to their high cost, less abundance along toxicity issues led scientific community search sustainable alternatives. In this context, earth- abundant base metals gained substantial attention culminating enormous recent years, predominantly pincer-type complexes nickel, cobalt, iron, manganese. regard, group VI chromium, molybdenum tungsten overlooked remain underdeveloped despite earth-abundance bio-compatibility. This review delineates comprehensive overview arena homogeneously catalysed (de)hydrogenation using molybdenum, till date. Various described; hydrogenation, transfer dehydrogenation, acceptorless dehydrogenative coupling, hydrogen auto transfer, scope brief mechanistic insights.

Язык: Английский

Процитировано

7
Biorenewable carbon-supported Ru catalyst for N-alkylation of amines with alcohols and selective hydrogenation of nitroarenes DOI
Vishakha Goyal, Naina Sarki,

Mukesh Kumar Poddar

и другие.

New Journal of Chemistry, Год журнала: 2021, Номер 45(32), С. 14687 - 14694

Опубликована: Янв. 1, 2021

A renewable carbon-supported Ru catalyst (Ru/PNC-700) facilely prepared via simple impregnation followed by the pyrolysis process for N-alkylation of anilines with benzyl alcohol and chemoselective hydrogenation nitroarenes.

Язык: Английский

Процитировано

16
N-alkylation of Amines with primary/secondary alcohols using novel Cobalt(II) inverse triazolyl-pyridine complex DOI

Bhawana Shekhawat,

Puneet Singh Gahlaut,

Deepak Gautam

и другие.

Chemical Communications, Год журнала: 2024, Номер 60(65), С. 8581 - 8584

Опубликована: Янв. 1, 2024

Herein, we report a highly effective homogeneous methodology for the

Язык: Английский

Процитировано

2
Mo2C Catalyst Leads to Highly Efficient Hydrogen Transfer of Alcohols and Amines to Synthesize N-alkylamines DOI
Yimei Chen,

Zhe Wang,

Zhouyang Long

и другие.

Chemical Communications, Год журнала: 2024, Номер 60(93), С. 13750 - 13753

Опубликована: Янв. 1, 2024

Highly efficient hydrogen transfer coupling of alcohols and amines achieved by molybdenum carbide.

Язык: Английский

Процитировано

2
Highly Selective Synergistic N-Alkylation of Amines with ROH Catalyzed by Nickel–Ruthenium DOI
Lan Wang,

Xinchun Jv,

Ruke Wang

и другие.

ACS Sustainable Chemistry & Engineering, Год журнала: 2022, Номер 10(26), С. 8342 - 8349

Опубликована: Июнь 16, 2022

The synthesis of secondary amines through N-alkylation is particularly attractive. Conventional reactions usually provide undesired byproducts imines or/and tertiary amines, and discovery high-selective transformations that can minimize remains a challenge. Herein, reusable nickel–ruthenium catalyst Ni/Ru@SBA was developed exhibiting ideal selectivity toward N-monoalkylation alcohols with no formation occurred. Mechanistic studies proved the reaction reversible cascade mechanism. Based on oxidation to form aldehydes complex Ni/Ru@SBA[2H], what followed aldamine condensation into unstable intermediates which later obtained hydrogen from Ni/Ru@SBA[2H] finally amines. experimental reality solely under in presence H2O, original aldehydes/alcohols took place, disclosing why product yields could hardly be achieved H2O. along process allows production diverse selectivity.

Язык: Английский

Процитировано

10
Alkoxide Trap in Transition‐Metal‐Catalyzed Dehydrogenative Coupling and Borrowing Hydrogen Reactions DOI
Arumugam Vignesh, Zhe Wang, Yan Liu

и другие.

ChemCatChem, Год журнала: 2024, Номер 16(20)

Опубликована: Июль 2, 2024

Abstract Dehydrogenative coupling (DC) and borrowing hydrogen(ation) (BH) reactions are crucial in modern organic synthesis, offering efficient sustainable ways to create valuable compounds. However, they often face a significant challenge: the alkoxide trap. This Concept explores trap DC BH reactions, starting with basic mechanisms role of intermediates. It then examines how leads catalyst deactivation reduced selectivity, influenced by thermodynamic kinetic factors. To address this, we review recent advances design, ligand engineering, optimized reaction conditions, along use in‐situ spectroscopy computational modelling, better understand underlying processes guide rational development. Furthermore, this highlights broad applicability DC, across various substrates, underscoring urgency addressing issue unlock their full synthetic potential.

Язык: Английский

Процитировано

1