Polymetallophilic organic compounds I. A grignard rearrangement
作者:Edward L. McCaffery、Shalaby W. Shalaby
DOI:10.1016/s0022-328x(00)84738-5
日期:1965.2
organomagnesium compound was also reacted with phenyl isocyanate to produce the corresponding anilide, with water to obtain 2-methyl-1-butene and with benzonitrile to form 4-methyl-4-pentenophenone. All of these compounds with the exception of the olefin have never been characterized and were therefore prepared by an independent method. A mechanism for the rearrangement is proposed.
Sustainable Radical Cascades to Synthesize Difluoroalkylated Pyrrolo[1,2-<i>a</i>]indoles
作者:Honggui Huang、Menglin Yu、Xiaolong Su、Peng Guo、Jia Zhao、Jiabing Zhou、Yi Li
DOI:10.1021/acs.joc.7b03017
日期:2018.2.16
We disclose herein a photocatalytic difluoroalkylation and cyclization cascade reaction of N-(but-2-enoyl)indoles with broad substrate scopes in up to 90% isolated yield. This method provides sustainable and efficient access to synthesize difluoroalkylated pyrrolo[1,2-a]indoles with a quaternary carbon center under mild conditions.
我们在此公开了N-(丁-2-烯酰基)吲哚具有宽的底物范围的光催化二氟烷基化和环化级联反应,其分离产率高达90%。该方法提供了在温和条件下可持续有效地合成具有季碳中心的二氟烷基化吡咯并[1,2- a ]吲哚的方法。
Synthesis of Supramolecular Iridium Catalysts and Their Use in Enantioselective Visible-Light-Induced Reactions
作者:Thorsten Bach、Alexander Böhm
DOI:10.1055/s-0035-1561378
日期:——
Iridiumcomplexes were prepared which are covalently linked via a bipyridine ligand to a chiral octahydro-1H-4,7-methanoisoindol-1-one skeleton. The skeleton allows for two-point hydrogen bonding to prochiral lactams, which can be processed in iridium-catalyzed photochemical reactions. Attempts to use the iridiumcomplexes in reactions, which typically involve photoinduced electron transfer, failed
Visible-Light-Mediated Synthesis of Amidyl Radicals: Transition-Metal-Free Hydroamination and <i>N</i>-Arylation Reactions
作者:Jacob Davies、Thomas D. Svejstrup、Daniel Fernandez Reina、Nadeem S. Sheikh、Daniele Leonori
DOI:10.1021/jacs.6b04920
日期:2016.7.6
The development of photoredox reactions of aryloxy-amides for the generation of amidylradicals and their use in hydroamination-cyclization and N-arylation reactions is reported. Owing to the ease of single-electron-transfer reduction of the aryloxy-amides, the organic dye eosin Y was used as the photoredox catalyst, which results in fully transition-metal-free processes. These transformations exhibit
报道了芳氧基-酰胺光氧化还原反应产生酰胺基自由基的发展及其在加氢胺化-环化和 N-芳基化反应中的应用。由于芳氧基酰胺易于单电子转移还原,有机染料伊红 Y 被用作光氧化还原催化剂,这导致完全无过渡金属的过程。这些转变表现出广泛的范围,可以容忍几个重要的功能,并已用于复杂和高价值含氮分子的后期修饰。
Photoredox‐Catalyzed Defluorinative Functionalizations of Polyfluorinated Aliphatic Amides and Esters
A new catalytic approach to selective functionalization of the strong C−F bonds in polyfluorinated aliphatic esters and amides is reported, affording a diverse array of important partially fluorinated motifs through hydrodefluorination, defluoroalkylation, and defluoroalkenylation. Straightforward downstream chemistry towards fluorinated alcohols, amines and drug derivatives highlights the potential