A General Study of[(η5-Cp′)2Ti(η2-Me3SiC2SiMe3)]-Catalyzed Hydroamination of Terminal Alkynes: Regioselective Formation of Markovnikov and Anti-Markovnikov Products and Mechanistic Explanation (Cp′=C5H5, C5H4Et, C5Me5)
作者:Annegret Tillack、Haijun Jiao、Ivette Garcia Castro、Christian G. Hartung、Matthias Beller
DOI:10.1002/chem.200305674
日期:2004.5.17
A generalstudy of the regioselectivehydroamination of terminalalkynes in the presence of [(eta5-Cp)2Ti(eta2-Me3SiC2SiMe3)] (1), [(eta5-CpEt)2Ti(eta2-Me3SiC2SiMe3)] (CpEt=ethylcyclopentadienyl) (2), and [(eta5-Cp*)2Ti(eta2-Me3SiC2SiMe3)] (Cp*=pentamethylcyclopentadienyl) (3) is presented. While aliphatic amines give mainly the anti-Markovnikovproducts, anilines and aryl hydrazines yield the Markovnikov
[Ind2TiMe2]: A General Catalyst for the Intermolecular Hydroamination of Alkynes
作者:Andreas Heutling、Frauke Pohlki、Sven Doye
DOI:10.1002/chem.200305771
日期:2004.6.21
concentration of the employed amine. Furthermore, no dimerization of the catalytically active imido complex is observed in the hydroamination of 1-phenylpropyne with 4-methylaniline in the presence of [Ind(2)TiMe(2)] as catalyst. In general, a combination of [Ind(2)TiMe(2)]-catalyzed hydroamination of alkynes with subsequent reduction leads to the formation of secondary amines with good to excellent yields
(aminopyrimidinato)titanium complex has been synthesised from inexpensive and easily accessible 2-(tert-butylamino)pyrimidine and [Ti(NMe2)4] and used as a catalyst for the intermolecular hydroamination of alkynes as well as the cyclization of aminoalkenes. The hydroamination reactions of 1-phenylpropyne and terminal arylalkynes deliver the corresponding anti-Markovnikov addition products with excellent yields and
A Convenient Rhodium-Catalyzed Intermolecular Hydroamination Procedure for Terminal Alkynes
作者:Christian G. Hartung、Annegret Tillack、Harald Trauthwein、Matthias Beller
DOI:10.1021/jo010444t
日期:2001.9.1
intermolecular hydroamination of alkynes is presented. Terminalalkynes react efficiently with anilines in the presence of cationic rhodium(I) catalysts under very mild reaction conditions (e.g., base and acid free at room temperature) to yield up to 99% of the corresponding imines. An easy one-pot protocol for the synthesis of secondary amines was developed by combining this alkyne amination reaction
Iron(III) Triflimide as a Catalytic Substitute for Gold(I) in Hydroaddition Reactions to Unsaturated Carbon-Carbon Bonds
作者:Jose R. Cabrero-Antonino、Antonio Leyva-Pérez、Avelino Corma
DOI:10.1002/chem.201300386
日期:2013.6.24
In this work it is shown that iron(III) and gold(I) triflimide efficiently catalyze the hydroaddition of a wide array of nucleophiles including water, alcohols, thiols, amines, alkynes, and alkenes to multiple CC bonds. The study of the catalytic activity and selectivity of iron(III), gold(I), and Brønsted triflimides has unveiled that iron(III) triflimide [Fe(NTf2)3] is a robust catalyst under heating
在这项工作中表明,三氟甲磺酸铁(III)和金(I)可有效催化多种亲核试剂(包括水,醇,硫醇,胺,炔烃和烯烃)加氢成多个CC键。铁(III),金(I)和布朗斯台德三氟甲酸酯的催化活性和选择性的研究表明,三氟甲铁(III)[Fe(NTf 2)3 ]在加热条件下是一种坚固的催化剂,而金(I) )甚至由PPh 3稳定的三氟甲酰亚胺在80°C时容易分解并释放出三氟乙二酸(HNTf 2),该三氟乙二酸可催化相应的反应,如原位19 F,15 N和311 H NMR光谱。此处给出的结果表明,两种催化剂类型均具有弱点和优势,并且彼此互补。三氟化铁(III)可以替代三氟化金(I),作为不饱和碳-碳键加氢反应的催化剂。