Synthesis of 1‐(3
<i>H</i>
)isobenzofuranone compounds by tin powder promoted cascade condensation reaction
作者:Shangxian Wang、Ke‐Hu Wang、Bo Chang、Danfeng Huang、Yulai Hu
DOI:10.1002/aoc.6249
日期:2021.7
An efficient approach for the construction of phthalide compounds is developed through tin powder mediated cascade condensation reaction of 2-formylbenzoic acids with allyl bromides or α-bromoketone under mild reaction conditions. This method is easy to operate and can tolerate various functional groups to give the corresponding phthalides in good to excellent yields. The phthalides produced from α-bromoketone
通过锡粉介导的 2-甲酰基苯甲酸与烯丙基溴或α-溴酮在温和反应条件下的级联缩合反应,开发了一种有效的邻苯二甲酸酯化合物构建方法。该方法操作简单,可以耐受各种官能团,从而以良好到极好的收率得到相应的邻苯二甲酸酯。由α-溴酮生产的邻苯二甲酸酯可进一步转化为3,3a -dihydro -8 H -pyrazolo [5, l - a ]isoindol-8-one和8 H -pyrazolo[5, l- a ]isoindol-8-一。
Dual Gold Catalysis: Synthesis of Fluorene Derivatives from Diynes
作者:Janina Bucher、Thomas Wurm、Svenja Taschinski、Eleni Sachs、David Ascough、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/adsc.201600987
日期:2017.1.19
one benzyl‐ or allyl‐substituted alkyne attached to an aromatic backbone were converted in the presence of a gold catalyst. In a dualgold‐catalyzed process, goldvinylidenes are formed that selectively undergo formal CH insertion into the C(sp2)–H bond of the offered unsaturated systems. If H atoms are present in the propargylic position, a subsequent isomerization to the aromatic system takes place
1,5 -二炔系统轴承连接到芳族主链一个末端和一个或苄基烯丙基取代的炔转化在金催化剂的存在下进行。在金的双重催化过程中,形成了亚乙烯基金,该亚乙烯基选择性地将正规的CH插入所提供的不饱和体系的C(sp 2)-H键中。如果在炔丙基位置存在H原子,则随后发生向芳族体系的异构化反应,最终生成9 H-芴和11 H-苯并[ b ]芴衍生物。对于在炔丙基位置的季碳,则未观察到进一步的芳构化,因此10 H-苯并[ b高产率地获得]芴衍生物。
作者:Francisco Camps、Amadeu Llebaria、Josep Ma Moretó、Lluís Pagès
DOI:10.1016/s0040-4039(00)77687-8
日期:1992.1
The reaction of 1-bromomethyl-1-cycloalkenes and acetylenes in the presence of tetracarbonylnickel affords moderate to good yields of spirocyclopentenones in a regio and stereoselective process.
[EN] HETEROARYL COMPOUNDS USEFUL AS INHIBITORS OF SUMO ACTIVATING ENZYME<br/>[FR] COMPOSÉS HÉTÉROARYLE UTILES EN TANT QU'INHIBITEURS DE L'ENZYME D'ACTIVATION SUMO
申请人:DUFFEY MATTHEW O
公开号:WO2016004136A1
公开(公告)日:2016-01-07
Disclosed are chemical entities which are compounds of formula (I); or pharmaceutically acceptable salts thereof; wherein Y, Ra, Ra', Rb, Rc, X1, X2, X3, Rd, Z1, and Z2 have the values described herein and stereochemical configurations depicted at asterisked positions indicate absolute stereochemistry. Chemical entities according to the disclosure can be useful as inhibitors of Sumo Activating Enzyme (SAE). Further provided are pharmaceutical compositions comprising a compound of the disclosure and methods of using the compositions in the treatment of proliferative, inflammatory, cardiovascular, and neurodegenerative diseases or disorders.