Exploiting Iminoquinones as Electrophilic at Nitrogen “N+” Synthons for C–N Bond Construction
作者:Luis M. Mori-Quiroz、Chelsea G. Comadoll、Jonathan E. Super、Michael D. Clift
DOI:10.1021/acs.orglett.1c00867
日期:2021.9.17
New methods for C–N bond construction exploiting the N-centered electrophilic character of iminoquinones are reported. Iminoquinones, generated in situ via the condensation of o-vinylanilines with benzoquinones, undergo acid-catalyzed cyclization to afford N-arylindoles in excellent yields. Under similar reaction conditions, homoallylic amines react analogously to afford N-arylpyrroles. Additionally
报道了利用亚氨基醌的 N 中心亲电特性构建 C-N 键的新方法。通过邻乙烯基苯胺与苯醌缩合原位生成的亚氨基醌经过酸催化环化以优异的产率得到N-芳基吲哚。在类似的反应条件下,高烯丙基胺类似地反应得到N-芳基吡咯。此外,有机金属亲核试剂显示出添加到N-烷基亚氨基醌的氮原子上以提供胺产物。最后,亚氨基醌被证明是铜催化加氢胺化反应的亲电试剂。
Gold(I)−Catalyzed Synthesis of Cyclic Sulfamides via an Intramolecular Dehydrative Amination of Allylic Alcohols: A Strategy for 1,3‐Diamine Synthesis
作者:Soyun Lee、Da Mi Kim、Jae‐Sang Ryu
DOI:10.1002/adsc.202400280
日期:2024.8.6
stereoselective synthesis of natural products or bioactive compounds containing 1,3-diamine scaffold. Scheme 2 Open in figure viewerPowerPoint Comparison of gold(I)-catalyzed synthesis of cyclic sulfamidate and cyclic sulfamide. Building upon the success and insights gained from our previous work, we present herein an update to our methodology, focusing on the gold(I)-catalyzed synthesis of cyclic sulfamides
The synthesis of a library of homoallylic amines is reported. The key step in the synthesis is a one-pot N-acyliminium ion coupling involving a solid phase-bound carbamate, an aldehyde and an allylsilane under Lewis acid conditions. (C) 1999 Elsevier Science Ltd. All rights reserved.
METHODS OF PREPARING PRIMARY, SECONDARY AND TERTIARY CARBINAMINE COMPOUNDS IN THE PRESENCE OF AMMONIA
申请人:Thadani Avinash N.
公开号:US20100174090A1
公开(公告)日:2010-07-08
The present application relates to novel methods for the preparation of primary, secondary and tertiary carbinamine compounds, particularly the preparation of compounds of formulae I, IV and VI, from a carbonyl compound of formula II in the presence of ammonia or an ammonium equivalent of the formula NH
4
+
X
−
, by way of allylation, crotylation, arylation, reductive amination and catalytic hydrogenation.
METHODS OF PREPARING SECONDARY CARBINAMINE COMPOUNDS WITH BORONIC ACIDS
申请人:Thadani Avinash N.
公开号:US20100298572A1
公开(公告)日:2010-11-25
The present application relates to novel methods for the preparation of secondary carbinamine compounds, particularly the preparation of secondary carbinamine compounds of the formula Ia, formula Ib or formula IV from aldehydes of the formula II and boronic acids of the formula III or formula V, in the presence of ammonia or an ammonia equivalent of the formula NH
4+X−
.