Ooh LA LA: The reductive amination of levulinic acid with a variety of aliphatic amines and aniline derivatives including stericallyhinderedamines is presented. The reaction is promoted by an iridium catalyst operating at low loading and 5 bar H2 under neat conditions. The catalyst was also efficient for the synthesis of N-aryl isoindolinone in high yields.
Ooh LALA:提出了乙酰丙酸与多种脂族胺和苯胺衍生物(包括位阻胺)的还原胺化反应。铱催化剂在低负载和5 bar H 2的纯净条件下运行可促进反应。该催化剂对于高产率地合成N-芳基异吲哚啉酮也是有效的。
Iron-Catalyzed Nitrogen-Directed Coupling of Arene and Aryl Bromides Mediated by Metallic Magnesium
coupled with aryl bromides in the presence of an iron catalyst, metallic magnesium, a diamine ligand and an organic dihalide oxidant at 0 °C. The use of a 1:1 mixture of tetrahydrofuran and 1,4‐dioxane is essential for this CH bond activation reaction. The reaction has wider scope of the substrate compared with the reaction using a separately prepared Grignard reagent, and proceeds with lower catalyst
catalytic reactions using transition metals is an important challenge in organic chemistry in which the intermediates are related to those produced in the classical cross-couplingreactions. As part of our research program devoted to the development of metal-catalyzed reactions using indium organometallics, a protocol for the C⁻H activation and C⁻C coupling of 2-arylpyridines with triorganoindium reagents
Hydrophilic (η<sup>6</sup>-Arene)–Ruthenium(II) Complexes with P–OH Ligands as Catalysts for the Isomerization of Allylbenzenes and C–H Bond Arylation Reactions in Water
Half-sandwich ruthenium(II) complexes containing η6-coordinated 3-phenylpropanol and phosphinous-acid-type ligands, namely, [RuCl2(η6-C6H5CH2CH2CH2OH)P(OH)R2}] (R = Me (2a), Ph (2b), 4-C6H4CF3 (2c), 4-C6H4OMe (2d), OMe (2e), OEt (2f), and OPh (2g), have been synthesized in 44–88% yield by reacting [RuCl2η6:κ1(O)-C6H5CH2CH2CH2OH}] (1) with the appropriate pentavalent phosphorus oxide R2P(═O)H. The
含η半夹心钌(II)配合物6配位的3-苯基丙醇和亚膦酸基型配体,即,将[RuCl 2(η 6 -C 6 H ^ 5 CH 2 CH 2 CH 2 OH)P(OH) R 2 }](R = Me(2a),Ph(2b),4-C 6 H 4 CF 3(2c),4-C 6 H 4 OMe(2d),OMe(2e),OEt(2f),和OPh(2克),已在44-88%的产率通过反应而合成将[RuCl 2 η 6:κ 1(Ò)-C 6 H ^ 5 CH 2 CH 2 CH 2 OH}](1)与适当的五价磷氧化物R 2 P(= O)H。的结构将[RuCl 2(η 6 -C 6 H ^ 5 CH 2 CH 2 CH 2 OH)P(OH)Me 2 }](2A)通过X射线衍射方法进行了明确地证实。化合物2a – g被证明是催化活性在allylbenzenes的异构化为相应的(1-丙烯基)采用水作为唯一的反应溶剂,用将[RuCl苯衍生物2(η
Group Exchange between Ketones and Carboxylic Acids through Directing Group Assisted Rh-Catalyzed Reorganization of Carbon Skeletons
The Rh(I)-catalyzed direct reorganization of organic frameworks and group exchanges between carboxylic acids and aryl ketones was developed with the assistance of directinggroup. Biaryls, alkenylarenes, and alkylarenes were produced in high efficiency from aryl ketones and the corresponding carboxylic acids by releasing the other molecule of carboxylic acids and carbon monoxide. A wide range of functional