Highly selective direct azidation of alcohols over a heterogeneous povidone–phosphotungstic solid acid catalyst
作者:Sumit Kamble、Sagar More、Chandrashekhar Rode
DOI:10.1039/c6nj02500e
日期:——
A heterogeneous povidone–phosphotungstic acid catalyzed direct selective azidation of alcohols gave excellent product yields at room temperature.
一种异质碘酮-磷钨酸催化的直接选择性醇的叠氮化反应在室温下产率优异。
A mild and efficient method for preparation of azides from alcohols using acidic ionic liquid [H-NMP]HSO4
作者:Abdol R. Hajipour、Asiyeh Rajaei、Arnold E. Ruoho
DOI:10.1016/j.tetlet.2008.11.111
日期:2009.2
We report here an efficientmethod for the synthesis and characterization of [H-NMP]HSO4 and its application as an efficient catalyst and solvent for preparation of azides from corresponding alcohols under mild conditions. This processor showed high chemoselectivity for conversion of various alcohols to their corresponding azides.
METHOD FOR PREPARING ENAMIDE COMPOUND AND RUTHENIUM COMPLEX CATALYST USED THEREIN
申请人:POSTECH ACADEMY-INDUSTRY FOUNDATION
公开号:US20170291885A1
公开(公告)日:2017-10-12
Provided is a method for preparing an enamide compound, which includes reacting an organic azide compound having α-hydrogen and an anhydride by addition of a ruthenium complex catalyst in the presence of an ionic liquid, and a ruthenium complex catalyst used herein.
Synthesis of Enamides by Ruthenium-Catalyzed Reaction of Alkyl Azides with Acid Anhydrides in Ionic Liquid
作者:Han Kyu Pak、Junghoon Han、Mina Jeon、Yongjin Kim、Yearang Kwon、Jin Yong Park、Young Ho Rhee、Jaiwook Park
DOI:10.1002/cctc.201500935
日期:2015.12
Enamides were synthesized by a ruthenium‐catalyzed one‐pot, one‐step procedure from alkyl azides and acid anhydrides. The substrate scope includes not only secondary azides, but also primary aliphatic ones to give a wide range of enamides containing various functional groups. This one‐step procedure was based on the newly discovered activity of Severin's diruthenium complex ([Cp^RuCl2]2: Cp^=η5‐1‐methoxy‐2
Chemoselective, Isomerization-Free Synthesis of <i>N</i>
-Acylketimines from N-H Imines
作者:Yearang Kwon、Young Ho Rhee、Jaiwook Park
DOI:10.1002/adsc.201601406
日期:2017.5.2
synthesized through a ruthenium‐catalyzed generation of N–H ketimines from secondary azides and subsequent acylation with mixed anhydrides under mild conditions. The synthetic scope was broad to give N‐acylimines having various functional groups, including those with aliphatic groups that are prone to tautomerization to the corresponding enamides. In addition, various acyl moieties were accommodated