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Alkoxyphenyliminoiodanes: Highly Efficient Reagents for the Catalytic Aziridination of Alkenes and the Metal‐Free Amination of Organic Substrates
作者:Akira Yoshimura、Victor N. Nemykin、Viktor V. Zhdankin
DOI:10.1002/chem.201102265
日期:2011.9.12
Owing to the presence of the ortho‐substituent on the phenyl ring, these new iminoiodanes have excellent solubility in organic solvents and are efficient reagents for the catalytic aziridination of alkenes or the metal‐free tosylamination of organic substrates (see scheme, Ts=tosyl).
Metal-Free Amidation Reactions of Terminal Alkynes with Benzenesulfonamide
作者:Sachinta Mahato、Sougata Santra、Grigory V. Zyryanov、Adinath Majee
DOI:10.1021/acs.joc.8b03065
日期:2019.3.15
synthesize α-sulfonylamino ketones through the reaction between terminal alkynes and sulfonamides under ambient air using PIDA (diacetoxy iodobenzene). A library of α-sulfonylamino ketone derivatives having a variety of substituents has been synthesized. A plausible reaction pathway has been predicted. This reaction offers a broad substrate scope, metal-free synthesis, excellent regioselectivity, easily
Metal-free C–H Activation over Graphene Oxide toward Direct Syntheses of Structurally Different Amines and Amides in Water
作者:Prashant Shukla、Ambika Asati、Smita R. Bhardiya、Manorama Singh、Vijai K. Rai、Ankita Rai
DOI:10.1021/acs.joc.0c02219
日期:2020.12.4
Unprecedented metal-free synthesis of a variety of amines and amides is reported via amination of C(sp3)–H and C(sp2)–H bonds. The strategy involves graphene-oxide/I2-catalyzed nitrene insertion using PhINTs as a nitrene (NT) source in water at room temperature. A wide range of structurally different substrates, viz., cyclohexane, cyclic ethers, arenes, alkyl aromatic systems, and aldehydes/ketones
据报道,通过胺化C(sp 3)–H和C(sp 2)–H键,空前合成了多种胺和酰胺。该策略涉及在室温下使用PhINTs作为水中的腈(NT)源使用氧化石墨烯/ I 2催化的腈插入。尽管具有较低的收率,但已成功地使用各种结构不同的底物,即环己烷,环醚,芳烃,烷基芳族体系和具有α-苯环的醛/酮,以高收率获得了相应的腈插入产物在少数情况下。所设想的方法在操作简便性,无金属催化,使用水作为溶剂,环境反应条件和催化剂的可重复使用性方面均优于其他方法。