Photocatalytic cross-dehydrogenative coupling reaction toward the synthesis of N,N-disubstituted hydrazides and their bromides DOI
Lvyin Zheng,

Xiaoya Zhuo,

Yihan Wang

и другие.

Organic Chemistry Frontiers, Год журнала: 2022, Номер 9(11), С. 3012 - 3021

Опубликована: Янв. 1, 2022

An efficient strategy for the divergent synthesis of N , -disubstituted hydrazides and their bromides is reported through photoredox-catalytic cross-dehydrogenative coupling hydrazines aldehydes.

Язык: Английский

Acyl Radicals from α-Keto Acids: Metal-Free Visible-Light-Promoted Acylation of Heterocycles DOI
Hu-Lin Zhu,

Fan‐Lin Zeng,

Xiaolan Chen

и другие.

Organic Letters, Год журнала: 2021, Номер 23(8), С. 2976 - 2980

Опубликована: Март 29, 2021

A general and metal-free visible-light-induced decarboxylative arylation procedure at room temperature was described for the construction of acylated heterocyclic derivatives, such as benzimidazo/indolo[2,1-a]isoquinolin-6(5H)-ones, aroylazaspiro[4.5]trienones, thioflavones, so on. This practical conducted by using 2,4,5,6-tetra(9H-carbazol-9-yl)isophthalonitrile (4CzIPN) a photocatalyst under mild conditions, which avoided use an additional base, traditional heating, metal reagents.

Язык: Английский

Процитировано

125

Catalyst-Free Organic Transformations under Visible-Light DOI
Mina Tavakolian, Mona Hosseini‐Sarvari

ACS Sustainable Chemistry & Engineering, Год журнала: 2021, Номер 9(12), С. 4296 - 4323

Опубликована: Март 16, 2021

Pollutants from industry and chemical laboratories have harmful effects on human health the environment. Concerns about this problem led to development of more versatile sustainable protocols based principles green chemistry. One these innovative approaches is carry out reactions under visible-light sources without photocatalysts. This benign, simple, cost-effective method, inspired by nature, could be a suitable alternative some classical methods, change harsh reaction conditions into milder ones. In Perspective, we outlined results catalyst-free organic further encourage researchers in promising field. The proposed mechanisms generation an electron donor–acceptor complex (EDA) single-electron transfer (SET) pathway were discussed.

Язык: Английский

Процитировано

90

Cellulose-based special wetting materials for oil/water separation: A review DOI

Xueqing Zhao,

Fazli Wahid,

Ji-Xiao Cui

и другие.

International Journal of Biological Macromolecules, Год журнала: 2021, Номер 185, С. 890 - 906

Опубликована: Июнь 29, 2021

Язык: Английский

Процитировано

85

Decarboxylation‐Initiated Intermolecular Carbon‐Heteroatom Bond Formation DOI Creative Commons
Zhongyi Zeng, Abigail Feceu, Nardana Sivendran

и другие.

Advanced Synthesis & Catalysis, Год журнала: 2021, Номер 363(11), С. 2678 - 2722

Опубликована: Март 31, 2021

Abstract Carboxylic acids are among the most used feedstock chemicals due to their great structural diversity and easy handling. The use of carboxylic derivatives in decarboxylative couplings has proven be a valuable tool for construction C−C C‐heteroatom bonds. This synthetic strategy provides complementary bond disconnection traditional cross‐coupling methods. In this review, we provide comprehensive overview decarboxylation‐initiated intermolecular formation, outlining several main mechanistic concepts combined with early examples highlighting achievements made past decade until January 2021. these reactions, undergo initial decarboxylation then react other heteroatom electrophiles nucleophiles, thus replacing carboxylate group prevalent functionality. magnified image

Язык: Английский

Процитировано

83

Photoredox Catalytic Phosphine-Mediated Deoxygenative Hydroacylation of Azobenzenes with Carboxylic Acids DOI
Jingya Yang,

Cunhui Wang,

Bao Huang

и другие.

Organic Letters, Год журнала: 2024, Номер 26(2), С. 498 - 502

Опубликована: Янв. 9, 2024

The convenient and precise preparation of N,N′-diarylhydrazides, especially from readily available raw materials, remains highly challenging. Here, a photoredox catalytic phosphine-mediated deoxygenative hydroacylation azobenzenes with abundant carboxylic acids has been developed. With Ir[dF(CF3)ppy]2(dtbbpy)PF6 as the photocatalyst, reactions proceeded smoothly in presence PPh3 under visible light irradiation, delivering various N,N′-diarylhydrazides up to 92% yields. Mechanistic studies revealed that reaction proceeds via catalysis phosphoranyl-radical-mediated C–O bond cleavage acids.

Язык: Английский

Процитировано

14

Visible photons as ideal reagents for the activation of coloured organic compounds DOI Creative Commons
Lorenzo Di Terlizzi, Luca Nicchio,

Stefano Protti

и другие.

Chemical Society Reviews, Год журнала: 2024, Номер 53(10), С. 4926 - 4975

Опубликована: Янв. 1, 2024

In search for the perfect wave(length). This review is dedicated to recent efforts in development of visible light driven photochemical strategies occurring coloured organic compounds.

Язык: Английский

Процитировано

13

Visible-light-promoted decarboxylative addition cyclization of N-aryl glycines and azobenzenes to access 1,2,4-triazolidines DOI
Jingya Yang,

Menghui Song,

Hongyan Zhou

и другие.

Green Chemistry, Год журнала: 2021, Номер 23(16), С. 5806 - 5811

Опубликована: Янв. 1, 2021

Direct synthesis of 1,2,4-triazolidines have been readily achieved by the visible-light-promoted reaction N -aryl glycines and azobenzenes under mild conditions.

Язык: Английский

Процитировано

42

Visible‐Light‐Mediated Photocatalyst‐Free Hydroacylation of Azodicarboxylic Acid Derivatives with 4‐Acyl‐1,4‐dihydropyridines DOI
Li Liu, Jing Wang, Xiaoying Feng

и другие.

Chinese Journal of Chemistry, Год журнала: 2024, Номер 42(11), С. 1230 - 1236

Опубликована: Фев. 5, 2024

Comprehensive Summary A visible‐light‐enabled, photocatalyst‐free hydroacylation reaction of azodicarboxylic acid derivatives was described. This radical conjugate addition (RCA) protocol relied on the dual role 4‐acyl‐1,4‐dihydropyridine (acyl‐DHP) reagents that besides being as reservoirs, they also enabled conversion adducts to anion intermediates via reduction. Under “catalyst‐oxidant‐additive free” conditions, a wide range structurally different acyl hydrazide products were readily obtained in 56%—99% yields. The utility this transformation further demonstrated by scale‐up synthesis and downstream derivatization.

Язык: Английский

Процитировано

8

Visible-Light-Induced Siloxycarbene Addition to N═N of Azodicarboxylates: Synthesis of Acyl Hydrazides from Acylsilanes DOI
Mohammad Saleem,

Akash Ratwan,

Pokhriyal Yamini

и другие.

Organic Letters, Год журнала: 2024, Номер 26(10), С. 2039 - 2044

Опубликована: Март 4, 2024

We report the synthesis of acyl hydrazides from acylsilanes in presence visible light without aid additives or transition metals. Acylsilanes underwent [1,2]-Brook rearrangement to generate nucleophilic siloxycarbenes which on further addition N═N azodicarboxylates produced hydrazides. Control experiments indicate that reaction proceeds through singlet carbene intermediate. Transformation hydrazide functionality other functional groups was demonstrated, including drug candidate Moclobemide.

Язык: Английский

Процитировано

8

Visible-Light-Promoted Aerobic Oxyphosphorylation of α-Diazoesters with H-Phosphine Oxides DOI
Hongyan Zhou, Ganggang Wang,

Cunhui Wang

и другие.

Organic Letters, Год журнала: 2022, Номер 24(7), С. 1530 - 1535

Опубликована: Фев. 14, 2022

A visible-light-promoted aerobic oxyphosphorylation of α-diazoesters and H-phosphine oxides has been developed. Using air as the oxygen source, reaction proceeded smoothly at room temperature under blue-light irradiation. The α-diazoesters, molecular oxygen, are conveniently incorporated into a C-O-P(O) unit in one step. preliminary mechanistic studies indicated that light-triggered radical process is involved. developed strategy shows unrevealed reactivity diazo compounds with potential value synthetic applications.

Язык: Английский

Процитировано

24