Copper-Catalyzed Aerobic Cyclization of β,γ-Unsaturated Hydrazones with Concomitant C═C Bond Cleavage - Details

author：

Fan, Z. (Fan, Z..) ^[1] | Feng, J. (Feng, J..) ^[2] | Hou, Y. (Hou, Y..) ^[3] | Rao, M. (Rao, M..) ^[4] | Cheng, J. (Cheng, J..) ^[5]

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Abstract：

A　Cu-catalyzed　aerobic　oxidative　cyclization　of　β,γ-unsaturated　hydrazones　for　the　preparation　of　pyrazole　derivatives　has　been　developed.　The　hydrazonyl　radical　promoted　the　cyclization,　along　with　a　concomitant　C═C　bond　cleavage　of　β,γ-unsaturated　hydrazones.　This　process　has　been　verified　via　several　control　experiments,　including　a　radical-trapping　study,　an　18O-labeling　method,　and　the　identification　of　the　possible　byproducts.　The　advantages　of　this　reaction　include　operational　simplicity,　a　broad　reaction　scope,　and　a　mild　selective　reaction　process.　Copyright　©　2020　American　Chemical　Society.

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[ 1 ] [Fan, Z.]State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 2 ] [Feng, J.]State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 3 ] [Hou, Y.]State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 4 ] [Rao, M.]State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 5 ] [Cheng, J.]State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou, 350116, China

Reprint 's Address：

[Cheng, J.]State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou UniversityChina

Email：

jjcheng@fzu.edu.cn

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Source ：

Organic Letters

ISSN： 1523-7060

Year： 2020

6 . 0 0 5

JCR@2020

4 . 9 0 0

JCR@2023

ESI HC Threshold：160

JCR Journal Grade：1

CAS Journal Grade：1

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WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 1

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