Iron-catalyzed C–N bond formation via oxidative Csp3–H bond functionalization adjacent to nitrogen in amides and anilines: Synthesis of N-alkyl and N-benzyl azoles
作者:G. Saidulu、R. Arun Kumar、K. Rajender Reddy
DOI:10.1016/j.tetlet.2015.05.048
日期:2015.7
Iron catalyzed oxidative protocol was developed to couple azoles with amides to generate N-alkylazole derivatives in moderate to excellent yields using tertiarybutyl hydroperoxide as an oxidant under mild reaction conditions. Furthermore, this protocol explored to couple azoles with N-alkylanilines, unexpectedly N-benzyl azoles were obtained as major products under these oxidative conditions.
A Metal-Free Cross-Dehydrogenative Coupling Reaction of Amides to Access N-Alkylazoles
作者:Shengmei Guo、Hu Cai、Zheng Zhu、Yufeng Wang、Mingmeng Yang、Ling Huang、Jiuhan Gong
DOI:10.1055/s-0036-1588307
日期:——
An iodine-catalyzed cross-dehydrogenativecouplingreaction of N-alkyl amides and azoles is reported. The catalytic system provides an efficient method for introducing amides onto azoles, especially onto benzotriazoles.
Copper catalyzed oxidative cross-coupling of aromatic amines with 2-pyrrolidinone: a facile synthesis of N-aryl-γ-amino-γ-lactams
作者:S. Priyadarshini、P.J. Amal Joseph、M. Lakshmi Kantam
DOI:10.1016/j.tet.2014.04.070
日期:2014.9
Synthesis of N-aryl-gamma-amino-gamma-lactams by oxidative coupling of aromatic amines with 2-pyrrolidinone using catalytic amount of CuO nanoparticles is described. The procedure has broad substrate scope, good yields, complete regioselectivity and catalyst recyclability. (C) 2014 Elsevier Ltd. All rights reserved.
Iron-Catalyzed N-Alkylation of Azoles via Cleavage of an sp<sup>3</sup> C–H Bond Adjacent to a Nitrogen Atom
作者:Qinqin Xia、Wanzhi Chen
DOI:10.1021/jo301568e
日期:2012.10.19
Iron-catalyzed direct C-N bond formation between azoles and amides is described. The oxidative coupling reactions of sp(3) C-H bonds adjacent to a nitrogen atom in amides and sulfonamides with the N-H bond in azoles proceeded smoothly in the presence of FeCl2 and di-tert-butyl peroxide (DTBP).
(Diacetoxyiodo)benzene-Mediated Transition-Metal-Free Amination of C(sp3)–H Bonds Adjacent to Heteroatoms with Azoles: Synthesis of N-Alkylated Azoles
作者:Can Jin、Weike Su、Bin Sun、Zhiyang Yan
DOI:10.1055/s-0037-1610293
日期:2018.11
cross-dehydrogenative coupling reaction of α-C(sp3)–H bonds adjacent to a hetero atom with various azoles has been developed, which provides an alternative method for constructing C–N bonds with high atom efficiency. This new protocol requires no metal catalyst and it provides ready access to a wide range of N-alkylated azole derivatives in moderate to excellent yields by using commercially available PhI(OAc)2