Iridium-catalyzed aziridination of aliphatic aldehydes, aliphatic amines and ethyl diazoacetate
作者:Takashi Kubo、Satoshi Sakaguchi、Yasutaka Ishii
DOI:10.1039/b000518p
日期:——
Three-component coupling reactions of aliphatic aldehydes,
aliphatic amines and ethyl diazoacetate to the corresponding aziridine
derivatives has been achieved by the use of [Ir(cod)Cl]2 as a
catalyst under mild conditions; for instance, the reaction of
n-butyraldehyde, tert-butylamine and ethyl diazoacetate
in the presence of a catalytic amount of [Ir(cod)Cl]2 in THF at
−10 °C gave
1-tert-butyl-2-ethoxycarbonyl-3-propylaziridine in 85% yield in
high stereoselectivity (cis : trans = 96∶4).
PHOSPHO-AMINO PINCER-TYPE LIGANDS AND CATALYTIC METAL COMPLEXES THEREOF
申请人:Huang Kuo-Wei
公开号:US20120323007A1
公开(公告)日:2012-12-20
The present invention provides phospho-amino pincer-type ligands, metal complexes thereof, and catalytic methods comprising such metal complexes.
本发明提供了磷酸氨基夹持型配体、其金属配合物以及包括这种金属配合物的催化方法。
Reaction of primary amines with Pt/C catalyst in water under microwave irradiation: a convenient synthesis of secondary amines from primary amines
作者:Akira Miyazawa、Kaori Saitou、Kan Tanaka、Thomas M. Gädda、Masashi Tashiro、G.K. Surya Prakash、George A. Olah
DOI:10.1016/j.tetlet.2005.12.075
日期:2006.2
Upon microwave irradiation in water, Pt/C converts primary amines into secondary amines in good yield via retro-reductive and reductive amination.
在水中微波照射后,Pt / C通过逆还原和还原胺化将伯胺高产率地转化为仲胺。
On the lewis acid catalyzed cyclocondensation of imines with a siloxydiene
作者:James F. Kerwin、Samuel Danishefsky
DOI:10.1016/s0040-4039(00)87694-7
日期:1982.1
A hetero Diels-Alder route to 5,6-dihydro-γ-pyridones is described. Recently, we described the Lewis Acid catalyzed cyclocondensation of aldehydes with siloxydienes to give 5,6-dihydro-γ-pyrones. It was of interest to attempt to extend this reaction to include the imino linkage. Certainly, there have been reports of intermolecular 2 + 4cycloadditions to “C = N” dienophiles.2 However, they have involved
描述了到5,6-二氢-γ-吡啶酮的杂Diels-Alder路线。最近,我们描述了路易斯酸催化的醛与甲硅烷二烯的环缩合反应,得到5,6-二氢-γ-吡喃酮。试图扩大该反应以包括亚氨基键是令人感兴趣的。当然,已经有报道称分子间2 + 4环加成到“ C = N”双亲物上。2然而,它们都涉及特别激活乙醛酰亚胺(参见如图1所示,3个酰基亚胺(通过假定前体2)4或双活化的亚胺(参见3)。5此外,我们注意到的Weinreb已优雅利用分子内第尔斯-阿尔德酰基亚胺的反应6 作为生物碱合成的新策略。
Dichotomy of Fe<sup>+</sup>-Mediated Sequential Activation of CH/CC Bonds of Aldimines: A Case of Efficient Reaction Control by Chain-Length Effects Preliminary Communication
作者:Tilmann Prüsse、Helmut Schwarz
DOI:10.1002/hlca.19900730503
日期:1990.8.8
metastable ions of Fe+ complexes of aldimines R1NCHR2 exhibit a unique behaviour in that sequential loss of olefin/H2 follows two distinct pathways: one corresponds to the familiar pattern of double remote functionalization, involving either alkyl chain R1 and R2. In addition, based on labeling studies, evidence is presented demonstrating that the consecutive elimination of C2H4/H2 from the Fe+ complex of
Aldimines R 1 NCHR 2的Fe +配合物的亚稳态离子表现出独特的行为,因为烯烃/ H 2的顺序损失遵循两种不同的途径:一种对应于熟悉的双重远程官能化模式,涉及烷基链R 1和R 2。另外,基于标记研究,提供了证据,表明从C 6 H 13 NCHC 3 H 7的Fe +络合物中连续消除C 2 H 4 / H 2仅涉及C 6 H基板的13部分。亚胺的这些和其他Fe +介导的CH / CC键活化受链长效应控制,反映了特定环尺寸的金属环中间体的优先形成。