Palladium-Catalyzed Domino Heck/C–H Activation/Decarboxylation: A Rapid Entry to Fused Isoquinolinediones and Isoquinolinones
作者:Xiai Luo、Liwei Zhou、Haiyan Lu、Guobo Deng、Yun Liang、Chunming Yang、Yuan Yang
DOI:10.1021/acs.orglett.9b03883
日期:2019.12.20
A new palladium-catalyzed tandem cyclization of various alkene-tethered aryliodides has been presented. In this protocol, o-bromobenzoic acids are employed as coupling parters to achieve the insertion of aromatic rings by the cleavage of C(sp2)-Br and decarboxylation, thus assembling various dibenzoisoquinolinediones and dibenzoisoquinolinones. In addition, a seven-membered ring can be constructed
ISOCHROMENE DERIVATIVES AS PHOSHOINOSITIDE 3-KINASES INHIBITORS
申请人:CHIESI FARMACEUTICI S.p.A.
公开号:US20150166549A1
公开(公告)日:2015-06-18
Compounds of formula (I) described herein are useful for inhibiting phosphoinositide 3-kinases (PI3K) and the treatment of disorders associated with PI3K enzymes.
were evaluated as catalysts for the oxidation of benzhydrol to benzophenone in the presence of Oxone® (2KHSO5·KHSO4·K2SO4) as a co-oxidant at room temperature. A study on the substituent effect of the benzene ring of N-isopropyl-2-iodobenzamide on the oxidation revealed that its reactivity increased in the following order of substitution: 5-NO2 < 5-CO2Me, 3-OMe < 5-OAc < 5-Cl < H, 4-OMe < 5-Me < 5-OMe
A novel palladium-catalyzed decarboxylative cascade cyclization for the assembly of diverse fused heteropolycycles by employing α-oxocarboxylic acids as three-carbon insertion units is reported. This protocol enables the synthesis of isoquinolinedione- and indolo[2,1-a]isoquinolinone-fused benzocycloheptanones in moderate to good yields by the use of different aryl iodides, including alkene-tethered
报道了一种新颖的钯催化脱羧级联环化反应,该反应通过使用α-氧代羧酸作为三碳插入单元来组装各种稠合的杂多环。该方案可通过使用不同的芳基碘化物(包括烯烃系的2-碘代苯甲酰胺和2-(2-碘代苯基)-)以中等到良好的产率合成异喹啉二酮和吲哚并[2,1 - a ]异喹啉酮稠合的苯并环庚酮1 H-吲哚。值得注意的是,该方法通过依次进行分子内碳氢合,CH活化和脱羧,实现了六元环和七元环的同时构建。
Palladium-Catalyzed Carbonylative Annulation Reactions Using Aryl Formate as a CO Source: Synthesis of 2-Substituted Indene-1,3(2<i>H</i>)-dione Derivatives
作者:Ying Zhang、Jing-Lei Chen、Zhen-Bang Chen、Yong-Ming Zhu、Shun-Jun Ji
DOI:10.1021/acs.joc.5b01758
日期:2015.11.6
An efficient synthesis of 2-substituted indene-1,3(2H)-diones from stable and readily available 1-(2-halophenyl)-1,3-diones by employing phenyl formate as a CO source has been developed. The reaction occurred via palladium-catalyzed intramolecular carbonylative annulation using K3PO4 as a base and DMSO as a solvent at 95 °C. In this protocol, the reaction showed a broad substrate scope with good to
已经开发了通过使用甲酸苯酯作为CO源从稳定且容易获得的1-(2-卤代苯基)-1,3-二酮有效合成2-取代的茚-1,3(2 H)-二酮的方法。该反应通过在95°C下使用K 3 PO 4为碱和DMSO作为溶剂的钯催化的分子内羰基环化反应进行。在该方案中,反应显示出广泛的底物范围,具有良好或优异的产率。