of imidazole ring by a Cs2CO3-promoted annulation of amidoximes with terminal alkynes in DMSO has been developed. This protocol provides a simple synthetic route with high atom-utilization for the synthesis of 2,4-disubstituted imidazoles in good yields under transition-metal-free and ligand-free conditions. Internal alkynes can also undergo the annulation to give 2,4,5-trisubstituted imidazoles.
Kempter,G. et al., Zeitschrift fur Chemie, 1968, vol. 8, # 9, p. 339 - 340
作者:Kempter,G. et al.
DOI:——
日期:——
SURFACE TREATING COMPOSITION FOR COPPER AND COPPER ALLOY AND UTILIZATION THEREOF
申请人:Shikoku Chemicals Corporation
公开号:EP2721195A1
公开(公告)日:2014-04-23
US9649713B2
申请人:——
公开号:US9649713B2
公开(公告)日:2017-05-16
[EN] SURFACE TREATING COMPOSITION FOR COPPER AND COPPER ALLOY AND UTILIZATION THEREOF<br/>[FR] COMPOSITION DE TRAITEMENT DE SURFACE POUR DU CUIVRE ET UN ALLIAGE DE CUIVRE ET SON UTILISATION
申请人:SHIKOKU CHEM
公开号:WO2012176591A1
公开(公告)日:2012-12-27
A surface treating composition for copper or a copper alloy comprising an imidazole compound and means for using the composition in the soldering of electronic parts to printed wiring boards are disclosed.