Copper-Catalyzed Direct Transformation of Secondary Allylic and Benzylic Alcohols into Azides and Amides: An Efficient Utility of Azide as a Nitrogen Source
作者:Balaji V. Rokade、Karthik Gadde、Kandikere Ramaiah Prabhu
DOI:10.1002/ejoc.201500010
日期:2015.4
synthesis of amides has been explored by using secondary alcohols, Cu(ClO4)2·6H2O as a catalyst, and trimethylsilyl azide (TMSN3) as a nitrogen source in the presence of 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) at ambient temperature. This method has been successfully adapted to the preparation of azides directly from their corresponding alcohols and offers excellent chemoselectivity in the formation
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
申请人:POSTECH Research and Business Development Foundation 포항공과대학교 산학협력단(220040433361) BRN ▼506-82-07303
公开号:KR20160059189A
公开(公告)日:2016-05-26
본 발명은 유기 아자이드 화합물로부터 질소에 치환기가 없는 이민을 발생시키고, 그와 아실 주개와의 반응을 통해 엔아마이드 화합물을 합성하는 방법에 관한 것이다. 본 발명의 제조 방법을 이용하면, 적절한 촉매를 사용하여 알파 수소를 가진 유기 아자이드로부터 연속한 질소 제거 및 1,2-수소 옮김 반응을 통해 질소에 치환기가 없는 이민을 생성하고, 이 이민과 아실 주개를 반응시켜 엔아마이드 화합물을 합성할 수 있다.