Copper-Catalyzed Amino Lactonization and Amino Oxygenation of Alkenes Using <i>O</i>-Benzoylhydroxylamines
作者:Brett N. Hemric、Kun Shen、Qiu Wang
DOI:10.1021/jacs.6b02840
日期:2016.5.11
A copper-catalyzed amino lactonization of unsaturated carboxylic acids has been achieved as well as the analogous intermolecular three-component amino oxygenation of olefins. The transformation features mild conditions and a remarkably broad substrate scope, offering a novel and efficient approach to construct a wide range of amino lactones as well as 1,2-amino alcohol derivatives. Mechanistic studies
chemistry is reported. Both phenol and aromatic or aliphatic acid derivatives could be used under operator-friendly conditions (room temperature, technical solvents, under air). The discovery of the superiority of benziodoxolone-derived hypervalent iodine reagent 3d as an alkyne transfer reagent further expands the rapidly increasing utility of hypervalent iodine reagents in catalysis and is expected
A Pd(II)-catalyzed cyclization using oxidative olefin diamination was developed for the preparation of isoindolinones from ortho-olefinic N-methoxybenzamides. Using the optimized reaction conditions, the desired products were obtained in up to 90% yield using NFSI as the oxidant. This reaction provides an efficient and direct access to isoindolinones with amine functionality, an important drug skeleton
Herein, we describe the first oxysilylation of unsaturated carboxylic acids mediated by di-tert-butylperoxide (DTBP), which enables the rapid and efficient preparation of silyl lactone compounds. This process tolerates functional groups, such as methyl, methoxy, halogen (fluoride and chloride), and cyano moieties. Furthermore, the strategy allows the application of a wide range of primary, secondary
Isoquinolinone is an important heterocyclic framework in natural products and biologically active molecules, and the efficient synthesis of this structural motif has received much attention in recent years. Herein, we report a (phenyliodonio)sulfamate (PISA)-mediated, solvent-dependent synthesis of different isoquinolinone derivatives. The method provides highly chemoselective access to 3- or 4-substituted isoquinolinone
抽象的 异喹啉酮是天然产物和生物活性分子中重要的杂环骨架,该结构基序的高效合成近年来备受关注。在此,我们报告了(苯基碘)氨基磺酸盐(PISA)介导的、溶剂依赖性的不同异喹啉酮衍生物的合成。该方法通过使邻链烯基苯甲酰胺衍生物与PISA在乙腈或湿六氟-2-异丙醇中反应,提供对3-或4-取代的异喹啉酮衍生物的高度化学选择性的获得。 Beilstein J. Org. Chem. 2024, 20, 1914–1921. doi:10.3762/bjoc.20.167