In situ generated CF3CHN2 with 3-ylideneoxindoles to access CF3-containing pyrazolo[1,5-c]quinazolines derivatives DOI Creative Commons

Mougang Hu,

Haitao Zhou,

Yu-Chen Fang

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(49), P. 36410 - 36415

Published: Jan. 1, 2024

A protocol involving a DBU-promoted [3 + 2] cycloaddition/1,3-H shift/rearrangement/dehydrogenation cascade was developed, giving series of CF 3 -containing pyrazole[1,5- c ]quinazolines in 35–86% yields.

Language: Английский

Generation of Stereocenters via Single-Carbon-Atom Doping Using N-Isocyanides DOI
Hayato Fujimoto,

Teruki Nishioka,

Kazuya Imachi

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Atomic carbon remains a challenging species for organic synthesis despite its potential to form four covalent bonds in single step. Single-carbon-atom doping (SCAD) offers powerful approach enhancing molecular complexity one process without atom loss. However, synthetically viable SCAD reactions capable of generating stereocenters have not been realized. Here, we report an reaction that creates by unlocking the reactivity (N-isocyanoimino)phosphorane as atomic equivalent. This reagent facilitates single-step conversion various acyl chlorides into homologated α-chloro cyclic ketones, proceeding via formation different bonds: C-Cl, C-H, and two C-C at incorporated atom.

Language: Английский

Citations

2
Recent advances in the synthesis of trifluoromethyl-containing heterocyclic compounds via trifluoromethyl building blocks DOI

Yaopeng Liu,

Qingyu Tian,

Jin Ge

et al.

Organic & Biomolecular Chemistry, Journal Year: 2024, Volume and Issue: 22(31), P. 6246 - 6276

Published: Jan. 1, 2024

Recent advances in the preparation of trifluoromethyl-containing heterocyclics via trifluoromethyl building block strategies over period from 2019 to present are systematically summarized and discussed.

Language: Английский

Citations

9
Asymmetric multi-component trifunctionalization reactions with α-Halo Rh-carbenes DOI Creative Commons

Xiaoyan Yang,

Xiaoyu Zhou, Wenhao Hu

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 7, 2025

Multi-component multi-functionalization reactions involving active intermediates are powerful tools for rapidly generating a wide array of compounds. Metal carbynoids, with their distinct reactivity, hold great promise developing synthetic methodologies. However, application in catalytic transfer has been hindered by the limited availability suitable precursors. In this study, we investigate potential α-halo Rh-carbenes, leveraging concept metal carbynoids reactions. Through chiral phosphoric acid-catalyzed asymmetric trifunctionalization, have developed method synthesizing variety α-cyclic ketal β-amino esters high yields and excellent enantioselectivity. Our extensive experimental computational studies reveal that Rh-carbenes exhibit carbynoid properties, which facilitate transformation into functionalized Fischer-type through decomposition C-halo bond.

Language: Английский

Citations

0
Recent progress in the synthesis of imidazoquinoline derivatives DOI Creative Commons

Warda Jahangir,

Sumayya Akram,

Sana Aslam

et al.

Results in Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 102270 - 102270

Published: April 1, 2025

Language: Английский

Citations

0
Multi-functionalization of Rh-carbynoids with alcohols/carbamates and α-propargylic-3-indolymethanols DOI

Jian Luo,

Mengchu Zhang, Gengxin Liu

et al.

Organic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(13), P. 3596 - 3601

Published: Jan. 1, 2024

This work represents the first example of interception a di-heteroatom ylide through an S N 1-type process, enabling multicomponent trifunctionalization Rh-carbynoids.

Language: Английский

Citations

1
Regioselective Synthesis of Multisubstituted Fluoropyrazoles via Silver‐Catalyzed One‐Pot Cyclization Reaction of Diazo Reagents with Fluoronitroalkenes DOI
Rong Wang, Jing Nie,

Xiaojuan Deng

et al.

Advanced Synthesis & Catalysis, Journal Year: 2024, Volume and Issue: 366(16), P. 3516 - 3521

Published: May 8, 2024

Abstract A silver‐catalyzed regioselective one‐pot cyclization reaction of diazo reagents with fluoronitroalkenes was developed. This transformation presents a method for accessing series 4‐aryl‐3‐fluoropyrazoles that are substituted various groups such as trifluoromethyl, carboxylic ester, nitrile, and phosphonate ester. Further synthetic transformations offered the corresponding fluorinated trifluoromethylated analogues two fungicide compounds.

Language: Английский

Citations

1
Generation of Stereocenters via Single-Carbon-Atom Doping Using N-Isocyanides DOI Creative Commons
Hayato Fujimoto,

Teruki Nishioka,

Kazuya Imachi

et al.

Published: Aug. 7, 2024

Among the electronically unsaturated carbon species, atomic is most challenging to use for synthesis of organic molecules, despite its potential forge four distinct covalent bonds at a center in single process. Single-carbon-atom doping (SCAD) into molecules without loss atoms reactant highly attractive because it allows remarkable increase molecular complexity We have previously reported that N-heterocyclic carbenes can serve as an equivalent suitable SCAD reactions. However, method limited formation methylene carbons, leaving full concept unrealized. Here, we report reaction results stereocenters by unlocking reactivity (N-isocyanoimino)triphenylphosphorane equivalent. This reagent enables single-step conversion range acyl chlorides homologated α-chloro cyclic ketones, which proceeds via generation different bonds, i.e., one C-Cl, C-H, and two C-C incorporated atom.

Language: Английский

Citations

1
Asymmetric Multi-component Trifunctionalization Reactions with α-Halo Rh-Carbenes DOI
Yu Qian,

Xiaoyan Yang,

Xiaoyu Zhou

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Abstract Multi-component multi-functionalization reactions involving active intermediates are powerful tools for rapidly generating a wide array of compounds. Metal carbynoids, with their distinct reactivity, hold great promise developing new synthetic methodologies. However, application in catalytic transfer has been hindered by the limited availability suitable precursors. In this study, we investigate potential α-halo Rh-carbenes, leveraging concept metal carbynoids reactions. Through chiral phosphoric acid-catalyzed asymmetric trifunctionalization, have developed an innovative method synthesizing variety α-cyclic ketal β-amino esters high yields and excellent enantioselectivity. Our extensive experimental computational studies reveal that Rh-carbenes exhibit carbynoid properties, which facilitate transformation into functionalized Fischer-type through decomposition C-halo bond.

Language: Английский

Citations

0
In situ generated CF3CHN2 with 3-ylideneoxindoles to access CF3-containing pyrazolo[1,5-c]quinazolines derivatives DOI Creative Commons

Mougang Hu,

Haitao Zhou,

Yu-Chen Fang

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(49), P. 36410 - 36415

Published: Jan. 1, 2024

A protocol involving a DBU-promoted [3 + 2] cycloaddition/1,3-H shift/rearrangement/dehydrogenation cascade was developed, giving series of CF 3 -containing pyrazole[1,5- c ]quinazolines in 35–86% yields.

Language: Английский

Citations

0