A three-component reaction of aldehydes, amines and allyltributylstannane was efficiently carried out to afford the corresponding homoallylicamine derivatives in the presence of 20 mol% of MgI2 etherate [(MgI2*(OEt2) n ] under mild and neutral reaction conditions in good to excellent yields.
在温和和中性反应条件下,在 20 mol% MgI2 醚合物 [(MgI2*(OEt2) n ] 的存在下,醛、胺和烯丙基三丁基锡烷的三组分反应得到了相应的高烯丙基胺衍生物。优良的产量。
MgI<sub>2</sub> Etherate-Catalysed Strecker Reaction: A Facile and Efficient Synthesis of α-Aminonitriles from Aldimines and Trimethylsilyl Cyanide
作者:Yongping Lu、Yanping Wang、Xingxian Zhang
DOI:10.3184/174751913x13817705381783
日期:2013.11
A mild and efficient procedure for the synthesis of α-aminonitriles is achieved by treatment of aldimines with trimethylsilylcyanide catalysed by MgI2 etherate.
Povarov Reaction of Cycloiminium Formed in Situ via Hydroamination Cycloisomerization of Homopropargylic Amines with Electron-Rich Olefins
作者:Qiangqiang Liu、Chan Wang、Qiang Li、Yajie Hou、Ye Wu、Lingyan Liu、Weixing Chang、Jing Li
DOI:10.1021/acs.joc.6b02496
日期:2017.1.20
A new, one-pot cascade reaction of homopropargylic amines with electron-rich olefins is developed in the presence of Cu(OTf)2 and affords a series of octahydrofuro[3,2-c]pyrrolo[1,2-a]quinoline derivatives in yields of 38–80%. This reaction proceeds through an intramolecular hydroamination cyclization of homopropargylic amine to generate a highly reactive cycloenamine intermediate in situ that subsequently
在Cu(OTf)2存在下开发了一种新的单炔胺与富电子烯烃的级联反应,并提供了一系列八氢呋喃[3,2- c ]吡咯并[1,2- a ]喹啉衍生物收率为38–80%。该反应通过高炔丙基胺的分子内加氢胺化反应进行,以生成高反应性的环烯胺中间体,该中间体随后异构化成环亚胺阳离子,然后与二氢呋喃,二氢吡喃或二氢吡咯进行Povarov型反应。值得注意的是,Al 2 O 3添加剂在有效抑制高炔丙基胺竞争性二聚方面起着关键作用。
Reactions of 2,2,6‐Trimethyl‐1,3‐dioxin‐4‐one with the Aryl Aldimines Prepared from Thiophene‐2‐carbaldehyde
作者:İlayda Koser、Nuket Ocal、Ihsan Erden
DOI:10.1002/jhet.2771
日期:2017.5
The reactions of aryl aldimines derived from thiophene‐2‐carbaldehyde (5–9) with 2,2,6‐trimethyl‐1,3‐dioxin‐4‐one (1) were investigated. The new 1,3‐oxazin‐4‐ones and thienylidene acetoacetamides were obtained in good yields. The synthetic utility of the latter via an intramolecular tandem Friedel–Crafts alkylation–acylation to give tetracyclic heterocyclic rings was also explored.
The Diverse Reactivity of Homopropargylic Amines as “Masked” 1C Synthons for the Aza-Friedel-Crafts Alkylation of Indoles
作者:Hao Chen、Min Ni、Xiaofeng Bao、Chan Wang、Lingyan Liu、Weixing Chang、Jing Li
DOI:10.1002/ejoc.201701523
日期:2018.1.31
A novel type of “masked” 1C synthon was developed through the hydroamination cyclization‐protonation of homopropargylic amines to act as aza‐Friedel–Crafts alkylation reagents to react with indoles. A variety of 3‐(2‐pyrrolidinyl)indoles were generated in good to high yields.