C−H Oxygenation Reactions Enabled by Dual Catalysis with Electrogenerated Hypervalent Iodine Species and Ruthenium Complexes
作者:Leonardo Massignan、Xuefeng Tan、Tjark H. Meyer、Rositha Kuniyil、Antonis M. Messinis、Lutz Ackermann
DOI:10.1002/anie.201914226
日期:2020.2.17
The catalytic generation of hypervalent iodine(III) reagents by anodic electrooxidation was orchestrated towards an unprecedented electrocatalytic C−H oxygenation of weakly coordinating aromatic amides and ketones. Thus, catalytic quantities of iodoarenes in concert with catalytic amounts of ruthenium(II) complexes set the stage for versatile C−H activations with ample scope and high functional group
Rhoda‐Electrocatalyzed Bimetallic C−H Oxygenation by Weak
<i>O</i>
‐Coordination
作者:Xuefeng Tan、Leonardo Massignan、Xiaoyan Hou、Johanna Frey、João C. A. Oliveira、Masoom Nasiha Hussain、Lutz Ackermann
DOI:10.1002/anie.202017359
日期:2021.6.7
Rhodium-electrocatalyzed arene C−Hoxygenation by weakly O-coordinating amides and ketones have been established by bimetallic electrocatalysis. Likewise, diverse dihydrooxazinones were selectively accessed by the judicious choice of current, enabling twofold C−H functionalization. Detailed mechanistic studies by experiment, mass spectroscopy and cyclovoltammetric analysis provided support for an unprecedented
Coumarin derivatives, process for their production and use thereof
申请人:Terashita Zen-ichi
公开号:US20050020634A1
公开(公告)日:2005-01-27
Compounds represented by the general formula. [I]:
wherein R
1
and R
2
are each hydrogen, halogen, an optionally substituted linear hydrocarbon group, or hydroxyl which may be substituted with an optionally substituted liner hydrocarbon group, or R
1
and R
2
together with the carbon atoms adjacent thereto may form an optionally substituted cyclic hydrocarbon or a dihydrofuran ring which may have an oxo group; ring A is a benzene ring which may be further substituted; ring B is an aromatic ring which may be substituted; X is a bond or a spacer whose main chain has 1 to 6 atoms; Y is carboxyl which may be esterified, carbamoyl which may be substituted, cyano, or an optionally substituted heterocyclic group bearing a hydrogen atom capable of being deprotonated, or salts thereof, which are useful as lipid-rich plaque regressing agents and/or ACAT inhibitors.
COUMARIN DERIVATIVES, PROCESS FOR THEIR PRODUCTION AND USE THEREOF
申请人:Takeda Chemical Industries, Ltd.
公开号:EP1471064A1
公开(公告)日:2004-10-27
Compounds represented by the general formula [I]:
wherein R1 and R2 are each hydrogen, halogen, an optionally substituted linear hydrocarbon group, or hydroxyl which may be substituted with an optionally substituted liner hydrocarbon group, or R1 and R2 together with the carbon atoms adjacent thereto may form an optionally substituted cyclic hydrocarbon or a dihydrofuran ring which may have an oxo group; ring A is a benzene ring which may be further substituted; ring B is an aromatic ring which may be substituted; X is a bond or a spacer whose main chain has 1 to 6 atoms; Y is carboxyl which may be esterified, carbamoyl which may be substituted, cyano, or an optionally substituted heterocyclic group bearing a hydrogen atom capable of being deprotonated, or salts thereof, which are useful as lipid-rich plaque regressing agents and/or ACAT inhibitors.
由通式[I]表示的化合物:
其中 R1 和 R2 分别为氢、卤素、任选取代的线性烃基或可被任选取代的衬烃基取代的羟基,或 R1 和 R2 与其相邻的碳原子一起可形成任选取代的环状烃或二氢呋喃环,其中可带有氧代基团;环 A 为苯环,可被进一步取代;环 B 是可被取代的芳香环; X 是主链具有 1 至 6 个原子的键或间隔物; Y 是可被酯化的羧基、可被取代的氨基甲酰基、氰基或带有可被去质子化的氢原子的任选取代的杂环基团,或其盐,可用作富脂斑块消退剂和/或 ACAT 抑制剂。