Construction of Multifunctionalized Azopyrazoles by Silver-Catalyzed Cascade Reaction of Diazo Compounds

Title
Construction of Multifunctionalized Azopyrazoles by Silver-Catalyzed Cascade Reaction of Diazo Compounds
Author(s)
이용록판딧라메쉬월프라사드
Keywords
H INSERTION REACTIONS; ONE-POT SYNTHESIS; CYCLIC DIAZODICARBONYL COMPOUNDS; RHODIUM(II)-CATALYZED REACTIONS; EFFICIENT SYNTHESIS; REGIOSELECTIVE SYNTHESIS; DERIVATIVES; PYRAZOLES; FUNCTIONALIZATION; CYCLOADDITION
Issue Date
201508
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED SYNTHESIS & CATALYSIS, v.357, no.12, pp.2657 - 2664
Abstract
A variety of multisubstituted azopyrazoles were synthesized in good yield from an efficient one-pot silver trifluoromethanesulfonate (AgOTf)-catalyzed cascade reaction of alpha-diazo-beta-keto esters with two arylhydrazines or two arylhydrazine hydrochlorides. This cascade reaction included pyrazolone formation, N-H insertion, and oxidation. For the synthesis of more diverse azopyrazoles bearing two different aromatic rings, the silver(I)-catalyzed cascade reaction of 4-diazopyrazol-3-one with arylhydrazine hydrochlorides was also developed. The advantages of these methodologies are easy handling, mild reaction conditions, and an effective and non-toxic catalyst usage.
URI
http://hdl.handle.net/YU.REPOSITORY/31431http://dx.doi.org/10.1002/adsc.201500197
ISSN
1615-4150
Appears in Collections:
공과대학 > 화학공학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE