在汞灯下由3-碘黄酮生成乙烯基自由基,并且与五元杂芳烃发生串联环化反应,需要两个连续的CC键形成,以合成苯并[ e ] chromeno [2,3 - g ]吲哚-13(1 H))-一阶导数。串联环化反应在乙腈中进行,没有任何添加剂,例如过渡金属,配体和氧化剂,在温和且环境友好的反应条件下,以高收率产生了各种各样的新型多环x吨酮骨架。
Metal-Free Oxidative Nitration of α-Carbon of Carbonyls Leads to One-Pot Synthesis of Thiohydroximic Acids from Acetophenones
作者:Shashikant U. Dighe、Sushobhan Mukhopadhyay、Kumari Priyanka、Sanjay Batra
DOI:10.1021/acs.orglett.6b01807
日期:2016.9.2
to carbonyl in propiophenones was achieved with I2/NaNO2 in the presence of an oxidant in dimethyl sulfoxide (DMSO) as the medium. Conversely under similar conditions, reaction of acetophenones produced thiohydroximic acids via a radical-based cascade event which involves oxidative nitration of the α-carbon to a carbonyl followed by Michael addition of the thiomethyl group from DMSO and subsequent rearrangement
Diversity-Oriented Synthesis of 3-Iodochromones and Heteroatom Analogues via ICl-Induced Cyclization
作者:Chengxiang Zhou、Anton V. Dubrovsky、Richard C. Larock
DOI:10.1021/jo0523722
日期:2006.2.1
The ICl-inducedcyclization of heteroatom-substituted alkynones provides a simple, highly efficient approach to various 3-iodochromones and analogues. This process is run under mild conditions, tolerates various functional groups, and generally provides chromones in good to excellent yields. Subsequent palladium-catalyzed transformations afford a rapid increase in molecular complexity and a convenient
Multi-Step Synthesis by Using Modular Flow Reactors: The Preparation of YneOnes and Their Use in Heterocycle Synthesis
作者:Ianâ R. Baxendale、Sørenâ C. Schou、Jörg Sedelmeier、Stevenâ V. Ley
DOI:10.1002/chem.200902906
日期:2010.1.4
Multi‐step in flow: The palladium‐catalysed acylation of terminal alkynes for the synthesis of yneones as well as their further transformation to various heterocycles in a continuous‐flow mode is presented. Furthermore, an extension of the simple flow configuration that allows for easy batch splitting and the generation of a heterocyclic library is described (see scheme).
Synthesis of 3-Iodo Derivatives of Flavones, Thioflavones and Thiochromones
作者:Fang Jie Zhang、Yu Lin Li
DOI:10.1055/s-1993-25904
日期:——
The title compounds, 2-aryl-3-iodo-4H-1-benzopyrans and 2-alkyl-or 2-aryl-3-iodo-4H-1-benzothiopyrans, were prepared by reaction of the corresponding heterocyclic derivatives with the iodine-cerium(IV) ammonium nitrate system under mild conditions. The scope and proposed mechanism of the reaction were also demonstrated.
The invention relates to a series of compounds with particular activity as inhibitors of the serine-threonine kinase AKT. Also provided are pharmaceutical compositions comprising same as well as methods for treating cancer.