Gold-catalyzed reactions of specially activated alkynes, allenes, and alkenes

D Campeau, DF León Rayo, A Mansour… - Chemical …, 2020 - ACS Publications
This review describes the gold-catalyzed reactions of specially activated alkynes, allenes,
and alkenes. Such species are characterized by the presence of either electron-donating or …

1, 2-Difunctionalizations of alkynes entailing concomitant C–C and C–N bond-forming carboamination reactions

SK Nanda, R Mallik - RSC advances, 2022 - pubs.rsc.org
Vicinal carboamination of alkynes is a highly reliable and efficient practical strategy for the
quick preparation of valuable and diverse amine derivatives starting from simple synthons …

Organocatalytic (5+ 1) benzannulation of Morita–Baylis–Hillman carbonates: synthesis of multisubstituted 4-benzylidene pyrazolones

S He, J Wang, J Zheng, QQ Luo, H Leng… - New Journal of …, 2022 - pubs.rsc.org
4-Benzylidene pyrazolones are valuable scaffolds of numerous bioactive molecules,
building blocks, ligands, dyes, and pigments. Therefore, the construction of 4-benzylidene …

Synthesis of Ethyl 3‐(1‐Acetyl‐3‐phenyl‐4,5‐dihydro‐1H‐pyrazol‐4‐yl)‐2,2‐difluoropropanoate from N‐Allyl‐N′‐benzylideneacetohydrazide and Ethyl 2‐Bromo …

Y Liu, W Zhu, X Yu, H Liu, Z Zhang… - Advanced Synthesis …, 2022 - Wiley Online Library
A route for cyclization reaction of N‐allyl‐N′‐benzylideneacetohydrazide and ethyl 2‐
bromo‐2, 2‐difluoroacetate to synthesize 3‐(1‐acetyl‐3‐phenyl‐4, 5‐dihydro‐1H‐pyrazol‐4 …

Photodecarboxylative Radical Cascade Involving N-(Acyloxy)phthalimides for the Synthesis of Pyrazolones

SP Panda, R Dash, SK Hota, S Murarka - Organic Letters, 2024 - ACS Publications
We disclose N′-arylidene-N-acryloyltosylhydrazides as novel skeletons for the synthesis of
biologically relevant alkylated pyrazolones through a photoinduced radical cascade with N …

Access to 1-aryl-pyrazolin-5-ones via photoinduced chemoselective cyclization of N-methacrylo aldehyde hydrazones

S Yu, Y Cheng, C Pan, JT Yu - Chemical Communications, 2025 - pubs.rsc.org
A photocatalytic sulfamoylation/5-endo-trig cyclization of (E)-N′-arylidene-N-
phenylmethacrylohydrazides with sulfamoyl chlorides was developed. The chemoselective …

Photoredox-catalyzed arylative and aryl sulfonylative radical cascades involving diaryliodonium reagents: synthesis of functionalized pyrazolones

KR Thombare, SK Parida, P Meher… - Chemical …, 2024 - pubs.rsc.org
We disclose a photoredox-catalyzed arylative radical cascade between N′-arylidene-N-
acryloylhydrazides and diaryliodonium reagents to obtain the corresponding benzylated …

Robust Organocatalytic Three-Component Approach to 1, 3-Diarylallylidene Pyrazolones via Consecutive Double Condensation Reactions

AK Patel, S Samanta - The Journal of Organic Chemistry, 2024 - ACS Publications
A robust pyrrolidine-BzOH salt-catalyzed one-pot three-component reaction involving 4-
unsubstituted pyrazolones, aryl/heteroarylaldehydes, and aryl methyl ketones is reported for …

Palladium(II) Acetate‐Catalyzed Dual C–H Functionalization and C–C Bond Formation: A Domino Reaction for the Synthesis of Functionalized (E)‐Bisindole‐2‐ones …

G Li, G Zhou, D Zhang‐Negrerie, Y Du… - Advanced Synthesis …, 2016 - Wiley Online Library
A domino reaction of palladium (II)‐catalyzed dual C–H functionalization with subsequent
intramolecular annulation is presented. This method provides a convenient synthesis of a …

DFT study on the Au (i)-catalyzed cyclization of indole-allenoate: counterion and solvent effects

B Yuan, R He, X Guo, W Shen, F Zhang, Y Xu… - New Journal of …, 2018 - pubs.rsc.org
A computational study using the B3LYP density functional was carried out to explore the
effects of counterions and solvents on the Au (I)-catalyzed cyclization reaction of indole …