Catalyst and Additive‐Free Direct Amidation/Halogenation of Tertiary Arylamines with
<i>N</i>
‐haloimide/amides
作者:Xiu‐Juan Xu、Adila Amuti、Abudureheman Wusiman
DOI:10.1002/adsc.202000796
日期:2020.11.18
developed for the amidation (halogenation) of tertiary arylamines by electrophilicactivation using N‐haloimide/amides. Several control experiments have been performed, and the coupling reaction outcomes indicated that the N‐haloimide/amide brings three major functions, including electrophilicactivation, aromatic halogenation and nucleophilic nitrogen sources. This cascade reaction features simple manipulation
A facile sp 3 C–H bonds amidation of N , N -dimethylanilines by a novel ionic iron(III) complex containing an imino-functionalized imidazolium cation
作者:Fan Zhu、Bing Lu、Hongmei Sun、Qi Shen
DOI:10.1016/j.tetlet.2016.07.098
日期:2016.9
imidazolium salt, 1-[1-(2,6-diisopropylphenylimino)ethyl]-3-benzylimidazolium chloride ([HL]Cl,), was designed and used to prepare a novel ionic iron(III) complex [HL][FeCl4] (2). Complex 2 was an efficient and easy-to-use catalyst for the direct sp3 C–H bond amidation of N,N-dimethylanilines, affording a wide variety of N-substituted aromatic or aliphatic amides in moderate to good yields. This reaction is
Chemoselective C−H Bond Activation: Ligand and Solvent Free Iron-Catalyzed Oxidative C−C Cross-Coupling of Tertiary Amines with Terminal Alkynes. Reaction Scope and Mechanism
作者:Chandra M. Rao Volla、Pierre Vogel
DOI:10.1021/ol9002509
日期:2009.4.16
FeCl2 catalyzes the oxidative C−C cross-coupling of tertiary amines with terminal alkynes into propargylamines using (t-BuO)2 as oxidant. The reaction can be applied to aromatic and aliphatic amines and alkynes without solvent. High chemoselectivity for aminomethyl groups is due to a steric factor.
We have developed a general and efficient method for copper-catalyzedamidation of saturated C−H bonds under mild conditions, and the used substrates include benzylic reagents, the N,N-dimethylaniline derivatives, the free carboxamides, and sulfonamides. The protocol uses inexpensive and readily available CuBr/N-halosuccinimide (NBS or NCS) as the catalyst/oxidant, so it provides practical applications
Copper-Catalyzed Amidation of sp<sup>3</sup> C−H Bonds Adjacent to a Nitrogen Atom
作者:Yongming Zhang、Hua Fu、Yuyang Jiang、Yufen Zhao
DOI:10.1021/ol701715m
日期:2007.9.1
We have developed a novel copper-catalyzed amidation of unactivated sp(3) C-Hbondsadjacent to a nitrogen atom by using an inexpensive catalyst-oxidant (CuBr/(t)BuOOH) system under mild conditions. The dephenylation was first found for N-benzylaniline, and the new class of products provide diverse structures for pharmaceuticals and combinatorial chemistry.