2-(Chloroseleno)苯甲酰氯用作一个多功能结构单元为新颖依布硒(2-苯基-1,2-苯并异硒唑-3(2的合成ħ) -酮)类似物和苯并[ b ]硒吩-3(2 ħ)-一阶导数 进行了新合成化合物的抗氧化活性和细胞毒性评估。在所有合成的化合物中,1-(3-羟基苯并[ b ]硒代苯并-2-基)乙酮肟(9)是最有效的抗氧化剂,也是最具细胞毒性的化合物。
Selenenylation–acylation of ketones with 2-chloroselenobenzoyl chloride. A novel route to benzo[b]selenophenes
摘要:
It has been found thar enolizable ketones and 1,3-diones react in neutral or basic medium with biselectrophiles such as 2-chloroselenobenzoyl chloride. The reaction takes place on the active alpha -methylene group. Selenenylation and subsequent acylation of the alpha -carbon atom take place and. depending on the ketone used, 3-hydroxybenzo[b]selenophenes or benzo[b]selenophen-3(2H)-ones are produced in moderate to high yields. (C) 2001 Published by Elsevier Science Ltd.
2-(Chloroseleno)benzoyl Chloride: A Tandem Reagent for Selenenylation-Acylation of C-H Acids
作者:Krystian Kloc、Mariusz Osajda、Jacek Mlochowski
DOI:10.1246/cl.2001.826
日期:2001.8
The 2-(chloroseleno)benzoyl chloride is a bifunctional electrophile able to react with C-H acids. The selenenylation and acylation of the active methylene group in the presence of triethylamine, lead to the ring closure. Based on this reaction 2-substituted benzo[b]selenophen-3(2H)-ones and 3-hydroxybenzo[b]selenophenes are produced in moderate to high yields.
Facile Method for Conversion of 2-(Chloroseleno)benzoyl Chloride into 2-Substituted 3-Hydroxybenzo[<i>b</i>]selenophenes
作者:Rafał Lisiak、Jacek Młochowski
DOI:10.1080/00397910902898627
日期:2009.11.5
Abstract The easily accessible 2-(chloroseleno)benzoyl chloride has broad application in the synthesis of benzizoselenazol-3(2H)-ones and benzo[b]selenophen-3(2H)-ones. Treatment of 2-acylbenzo[b]selenophen-3(2H)-ones with nitrogen nucleophiles such as hydrazines and hydroxylamine resulted in formation of 2-substituted 3-hydroxybenzo[b]selenophenes in 72–98% yield.